''Dioscorea'' is a genus of over 600 species of

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. They include all forbs (flowering plants without a woody stem), grasses and grass-like plants, a vast majority of ...

s in the family

Dioscoreaceae Dioscoreaceae () is a family of monocotyledonous flowering plants, with about 715 known species in nine genera. The best-known member of the family is the yam (some species of ''Dioscorea''). The APG system (1998) and APG II system (2003) both p ...

, native throughout the

tropical The tropics are the regions of Earth surrounding the Equator. They are defined in latitude by the Tropic of Cancer in the Northern Hemisphere at N and the Tropic of Capricorn in the Southern Hemisphere at S. The tropics are also referred to ...

and warm

temperate In geography, the temperate climates of Earth occur in the middle latitudes (23.5° to 66.5° N/S of Equator), which span between the tropics and the polar regions of Earth. These zones generally have wider temperature ranges throughout t ...

regions of the world. The vast majority of the species are tropical, with only a few species extending into temperate climates. It was named by the monk

Charles Plumier Charles Plumier (; 20 April 1646 – 20 November 1704) was a French botanist after whom the frangipani genus '' Plumeria'' is named. Plumier is considered one of the most important of the botanical explorers of his time. He made three botanizing ...

after the ancient

Greek Greek may refer to: Greece Anything of, from, or related to Greece, a country in Southern Europe: *Greeks, an ethnic group. *Greek language, a branch of the Indo-European language family. **Proto-Greek language, the assumed last common ancestor ...

physician and botanist

Dioscorides Pedanius Dioscorides ( grc-gre, Πεδάνιος Διοσκουρίδης, ; 40–90 AD), “the father of pharmacognosy”, was a Greek physician, pharmacologist, botanist, and author of '' De materia medica'' (, On Medical Material) —a 5-vo ...

Description

Wild Yam (''Dioscorea'') is a vine that is invasive, deciduous, and herbaceous. This species is native to Asia, though, in the U.S., it is commonly found in Florida. They can grow over in length. Wild yams are an important crop, as they have been used to prevent menstrual cramps, stomach cramps, and general pain for centuries. During the 1950s scientists found that the roots of wild yams contained diosgenin which is a plant-based estrogen; diosgenin is hypothesized to aid in chemical defense against herbivores. This was used to create the first birth control pills during the 60s. In addition, some ''Dioscorea'' species are rich in nutrients and antioxidants. This is beneficial in rural areas where the plant is native because it enriches the diets of individuals who live in the area. These plants grow best near canopy gaps in woodlands and rainforests. ''Dioscorea'' uses vining behavior which is useful in tropical habitats because ''Dioscorea'' grow under canopies and need to latch onto different surfaces in order to grow upwards and acquire resources.

Cultivation and uses

Several species, known as yams, are important

agricultural Agriculture or farming is the practice of cultivating plants and livestock. Agriculture was the key development in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that enabled peopl ...

crops in tropical regions, grown for their large tubers. Many of these are toxic when fresh, but can be detoxified and eaten, and are particularly important in parts of

Africa Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 6% of Earth's total surface area ...

Asia Asia (, ) is one of the world's most notable geographical regions, which is either considered a continent in its own right or a subcontinent of Eurasia, which shares the continental landmass of Afro-Eurasia with Africa. Asia covers an ...

, and

Oceania Oceania (, , ) is a region, geographical region that includes Australasia, Melanesia, Micronesia, and Polynesia. Spanning the Eastern Hemisphere, Eastern and Western Hemisphere, Western hemispheres, Oceania is estimated to have a land area of ...

. One class of toxins found in many species is

steroid A steroid is a biologically active organic compound with four rings arranged in a specific molecular configuration. Steroids have two principal biological functions: as important components of cell membranes that alter membrane fluidity; and ...

saponin Saponins (Latin "sapon", soap + "-in", one of), also selectively referred to as triterpene glycosides, are bitter-tasting usually toxic plant-derived organic chemicals that have a foamy quality when agitated in water. They are widely distributed ...

s, which can be converted through a series of chemical reactions into

steroid hormone A steroid hormone is a steroid that acts as a hormone. Steroid hormones can be grouped into two classes: corticosteroids (typically made in the adrenal cortex, hence ''cortico-'') and sex steroids (typically made in the gonads or placenta). With ...

s for use in medicine and as contraceptives. The 1889 book "The Useful Native Plants of Australia" records that ''

Dioscorea hastifolia ''Dioscorea hastifolia'', the Adjigo (ˈadʒɪɡəʊ) yam, also known as the Warram, is a yam with long, white, edible tubers that is native to South Western Australia. It is a climbing vine with hastate, spearheaded, leaves and bears green tria ...

'' is "One of the hardiest of the yams. The tubers are largely consumed by the local aborigines for food. (Mueller)."

Mechanism

Although the mechanism of ''Dioscorea'' vine behavior is unknown, it is likely that ''Dioscorea'' acts similarly to vines in terms of growth and movement behavior. Vines have a touch-sensitive component that allows them to locate and latch onto a supporting base. They use nearby plants, rocks, trees, and structures for physical support. Their touch receptors allow them to reach out and sense objects. Vines seek out these surfaces by sending out shoots to assess the area. This behavior is dependent on the species, but these shoots typically move in a clockwise or counterclockwise direction, induced by circadian rhythms (Digital time-lapse video). When the vine makes contact with an object, the tendril shoot will coil around the object; this is a reaction called thigmotropism. This tendril can control the amount of tension and squeeze the object to stay attached to it and prevent falling. Leaf growth is typically postponed until the relative stem has secured support. When leaf growth is delayed, shoot growth is hastened. Some vines produce an adhesive on their stems that contain calcium to better latch onto structures. A gradient is produced and the calcium exits cells to spread over stems. Furthermore, ''Dioscorea'' is a twiner, this means that the plant undergoes circumnutation which is a helical movement that allows stems to wrap around objects. In order for this mechanism to take place, endodermal cells, plasmodesmata, the plasma membrane, epidermal cells, calcium, potassium, chloride, and proton pumps are required. The SCR gene is also crucial for twining to occur. To better understand the physiology of ''Dioscorea'' further research must be conducted as much has still not been discovered.

Experiment

In 2009, an experiment was conducted to address the mechanism of force generation in the twining plant, ''Dioscorea'' ''bulbifera''. To do this, the authors used a mechanical pole that measured the squeezing force of the twining vine. Plants were grown in a greenhouse setting, and once the shoots of the plants started "circumnutating," a pole was introduced to allow for twining around the object. Authors found that the amount of force being applied to the pole when the vine is twining is due to the stretching of the stipule. The forces of the bending and twisting motion of ''D. bulbifera'' did not generate a measurable force. In addition, this experiment indicates that stipules are not the only driving force for tension in vines and that they contribute to increased squeezing force later in development. Overall, ''Dioscorea'' has a vining mechanism that allows it to obtain nutrients while living under a canopy; it has evolved to do this by seeking out surfaces to climb and latch onto. Vines, like ''Dioscorea'', have touch-sensitive components that allow them to specialize in this behavior.

Accepted species (613), subspecies, and varieties

The genus includes the following species and subspecies:

A

* ''

Dioscorea abysmophila ''Dioscorea abysmophila'' is a herbaceous vine in the genus ''Dioscorea''. It is native to Venezuela Venezuela (; ), officially the Bolivarian Republic of Venezuela ( es, link=no, República Bolivariana de Venezuela), is a country on the ...

'' Maguire & Steyerm. * ''

Dioscorea abyssinica ''Dioscorea abyssinica'' is a herbaceous vine in the genus ''Dioscorea'' native to several Central African countries including Benin, Burkina Faso, Central African Republic, Eritrea, Ethiopia, Ghana, Ivory Coast, Liberia, Mali, Nigeria, Senegal ...

'' Hochst. ex Kunth * '' Dioscorea acanthogene'' Rusby * ''

Dioscorea acerifolia ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extending ...

'' Phil. * ''

Dioscorea acuminata ''Dioscorea acuminata'' is a herbaceous vine in the family '' Dioscoreaceae'', which is listed as an endangered species by the IUCN Red List. It is indigenous to the central plateau of Madagascar Madagascar (; mg, Madagasikara, ), offici ...

'' Baker * ''

Dioscorea adenantha ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' Uline * ''

Dioscorea aesculifolia ''Dioscorea aesculifolia'' is a herbaceous vine in the genus ''Dioscorea''. The type specimen was collected in Brazil in 1994. The type specimen is damaged, but it appears to have palmate leaves with leaflets arranged in groups of five – a feat ...

'' R.Knuth * ''

Dioscorea aguilarii ''Dioscorea aguilarii'' is a herbaceous vine in the genus ''Dioscorea'' which is indigenous to El Salvador El Salvador (; , meaning " The Saviour"), officially the Republic of El Salvador ( es, República de El Salvador), is a country in Ce ...

'' Standl. & Steyerm. * ''

Dioscorea alata ''Dioscorea alata'', also known as purple yam, ube (, ), or greater yam, among many other names, is a species of yam (a tuber). The tubers are usually a vivid violet-purple to bright lavender in color (hence the common name), but some range in ...

'' L. * ''

Dioscorea alatipes ''Dioscorea alatipes'' is a herbaceous vine in the genus ''Dioscorea ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vas ...

'' Burkill & H.Perrier * ''

Dioscorea althaeoides ''Dioscorea althaeoides'' is a herbaceous vine in the genus ''Dioscorea'' which is indigenous to the Guizhou, Sichuan, and eastern Xizang provinces of China, in addition to the Yunnan area in Thailand. A formerly unknown acetylated spirostanol sa ...

'' R.Knuth * ''

Dioscorea altissima ''Dioscorea altissima'' is a herbaceous vine in the genus ''Dioscorea'' that is indigenous to forested areas of Brazil, Bolivia, Peru, Central America north to Panama, and the Caribbean. Its tubers are foraged and cooked for human consumption, an ...

'' Lam. * ''

Dioscorea amaranthoides ''Dioscorea amaranthoides'' is a herbaceous vine in the genus ''Dioscorea ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. Th ...

'' C.Presl * ''

Dioscorea amazonum ''Dioscorea amazonum'' is a herbaceous vine in the genus ''Dioscorea'' which is native to Bolivia, Brazil, Colombia, French Guiana, Guyana, Panamá, Peru, Suriname, and Venezuela. Specimens have been collected from forested areas next to roads an ...

'' Mart. ex Griseb. * ''

Dioscorea amazonum var. klugii ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' (R.Knuth) Ayala * ''

Dioscorea amoena ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extending ...

'' R.Knuth * ''

Dioscorea analalavensis ''Dioscorea analalavensis'' is a herbaceous vine in the genus ''Dioscorea ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The ...

'' Jum. & H.Perrier * ''

Dioscorea ancachsensis ''Dioscorea ancachsensis'' is a herbaceous plant in the genus ''Dioscorea ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The ...

'' R.Knuth * '' Dioscorea andina'' Phil. * '' Dioscorea andromedusae'' O.Téllez * '' Dioscorea angustifolia'' Rusby * '' Dioscorea anomala'' Griseb. * ''

Dioscorea antaly ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' Jum. & H.Perrier * ''

Dioscorea antucoana ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' Uline ex R.Knuth * ''

Dioscorea arachidna ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' Prain & Burkill * ''

Dioscorea araucana ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' Phil. * ''

Dioscorea arcuatinervis ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' Hochr. * ''

Dioscorea argyrogyna ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' Uline ex R.Knuth * ''

Dioscorea arifolia ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' C.Presl * ''

Dioscorea aristolochiifolia ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' Poepp. * ''

Dioscorea arnensis ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' R. Knuth * ''

Dioscorea asclepiadea ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' Prain & Burkill * '' Dioscorea aspera'' Humb. & Bonpl. ex Willd. * ''

Dioscorea aspersa ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' Prain & Burkill * ''

Dioscorea asperula ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' Pedralli * ''

Dioscorea asteriscus ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' Burkill * ''

Dioscorea atrescens ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' R.Knuth * '' Dioscorea auriculata'' Poepp.

B

* ''

Dioscorea bahiensis ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' R.Knuth * ''

Dioscorea bako ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' Wilkin * ''

Dioscorea balcanica ''Dioscorea balcanica'' is a herbaceous perennial in the family (biology), family Dioscoreaceae. Description Height 2–5 m. Flowers cup-shaped, arranged in racemes, producing loculicidal capsule (botany), capsules. Taxonomy This speci ...

'' Košanin * ''

Dioscorea bancana ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' Prain & Burkill * ''

Dioscorea banzhuana ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' S.J.Pei & C.T.Ting * ''

Dioscorea bartlettii ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' C.V.Morton * ''

Dioscorea basiclavicaulis ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extending ...

'' Rizzini & A.Mattos * ''

Dioscorea baya ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' De Wild. * ''

Dioscorea beecheyi ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' R.Knuth * ''

Dioscorea belophylla ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' (Prain) Voigt ex Haines * ''

Dioscorea bemandry ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' Jum. & H.Perrier * ''

Dioscorea bemarivensis ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' Jum. & H.Perrier * ''

Dioscorea benthamii ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' Prain & Burkill * ''

Dioscorea berenicea ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' McVaugh * ''

Dioscorea bermejensis ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' R.Knuth * '' Dioscorea bernoulliana'' Prain & Burkill * ''

Dioscorea besseriana ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extending ...

'' Kunth * ''

Dioscorea beyrichii ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' R.Knuth * '' Dioscorea bicolor'' Prain & Burkill * ''

Dioscorea biformifolia ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' S.J.Pei & C.T.Ting * ''

Dioscorea biloba ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' (Phil.) Caddick & Wilkin * ''

Dioscorea biplicata ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' R.Knuth * ''

Dioscorea birmanica ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' Prain & Burkill * ''

Dioscorea birschelii ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' Harms ex R.Knuth * '' Dioscorea blumei'' Prain & Burkill * '' Dioscorea bolivarensis'' Steyerm. * '' Dioscorea bonii'' Prain & Burkill * ''

Dioscorea bosseri ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' Haigh & Wilkin * ''

Dioscorea brachybotrya ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extending ...

'' Poepp. * ''

Dioscorea brachystachya ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' Phil. * ''

Dioscorea bradei ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' R.Knuth * ''

Dioscorea brandisii ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extending ...

'' Prain & Burkill * ''

Dioscorea brevipetiolata ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extending ...

'' Prain & Burkill * ''

Dioscorea bridgesii ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' Griseb. ex Kunth * '' Dioscorea brownii'' Schinz * ''

Dioscorea bryoniifolia ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' Poepp. * ''

Dioscorea buchananii ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' Benth. * ''

Dioscorea buckleyana ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' Wilkin * ''

Dioscorea bulbifera ''Dioscorea bulbifera'' (commonly known as the air potato, air yam, bitter yam, cheeky yam, potato yam, aerial yam, and parsnip yam) is a species of true yam in the yam family, Dioscoreaceae. It is native to Africa, Asia and northern Australia. I ...

'' L. * '' Dioscorea bulbotricha'' Hand.-Mazz. * ''

Dioscorea burchellii ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' Baker * ''

Dioscorea burkilliana ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' J.Miège

C

* ''

Dioscorea cachipuertensis ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' Ayala * ''

Dioscorea calcicola ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' Prain & Burkill * ''

Dioscorea caldasensis ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' R.Knuth * '' Dioscorea calderillensis'' R.Knuth * ''

Dioscorea callacatensis ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' R.Knuth * ''

Dioscorea cambodiana ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' Prain & Burkill * '' Dioscorea campanulata'' Uline ex R.Knuth * ''

Dioscorea campestris ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' Griseb. * ''

Dioscorea campos-portoi ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extending ...

'' R.Knuth * ''

Dioscorea carionis ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' Prain & Burkill * '' Dioscorea carpomaculata'' O.Téllez & B.G.Schub. * ''

Dioscorea carpomaculata var. cinerea ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' (Uline ex R.Knuth) O.Téllez & B.G.Schub. * ''

Dioscorea castilloniana ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extending ...

'' Hauman * ''

Dioscorea catharinensis ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' R.Knuth * ''

Dioscorea caucasica ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extending ...

'' Lipsky * ''

Dioscorea cavenensis ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' Lam. * ''

Dioscorea cayennensis ''Dioscorea cayenensis'' is a species of yam in the genus ''Dioscorea'' that is a widely consumed West African domesticated crop. ''Dioscorea rotundata ''Dioscorea cayenensis'' subsp. ''rotundata'', commonly known as the white yam, West Afric ...

'' Lam. * ''

Dioscorea cayennensis subsp. rotundata ''Dioscorea cayenensis'' subsp. ''rotundata'', commonly known as the white yam, West African yam, Guinea yam, or white ñame, is a subspecies of yam native to Africa. It is one of the most important cultivated yams. Kokoro is one of its most imp ...

'' (Poir.) J.Miège; syn.: '' D. rotundata'' Poir. * '' Dioscorea ceratandra'' Uline ex R.Knuth * '' Dioscorea chacoensis'' R.Knuth * ''

Dioscorea chagllaensis ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' R.Knuth * ''

Dioscorea chancayensis ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' R.Knuth * ''

Dioscorea chaponensis ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extending ...

'' R.Knuth * ''

Dioscorea chiapasensis ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' Matuda * '' Dioscorea chimborazensis'' R.Knuth * '' Dioscorea chingii'' Prain & Burkill * ''

Dioscorea choriandra ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' Uline ex R.Knuth * '' Dioscorea chouardii'' Gaussen * '' Dioscorea cienegensis'' R.Knuth * ''

Dioscorea cinnamomifolia ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' Hook. * ''

Dioscorea cirrhosa ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' Lour. * ''

Dioscorea cissophylla ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' Phil. * ''

Dioscorea claessensii ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extending ...

'' De Wild. * ''

Dioscorea claussenii ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' Uline ex R.Knuth * ''

Dioscorea claytonii ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' Ayala * ''

Dioscorea cochleariapiculata ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' De Wild. * ''

Dioscorea collettii ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extending ...

'' Hook.f. * '' Dioscorea collettii var. hypoglauca'' (Palib.) S.J.Pei & C.T.Ting * ''

Dioscorea communis ''Dioscorea communis'' or ''Tamus communis'' is a species of flowering plant in the yam family Dioscoreaceae and is commonly known as black bryony, lady's-seal or black bindweed. Description It is a climbing herbaceous plant growing to 2–4 m t ...

'' (L.) Caddick & Wilkin * ''

Dioscorea commutata ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' R.Knuth * ''

Dioscorea comorensis ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' R.Knuth * ''

Dioscorea composita ''Dioscorea composita'', or barbasco, is a species of yam in the genus ''Dioscorea'', native to Mexico. It is notable for its role in the production of diosgenin, which is a precursor for the synthesis of hormones such as progesterone. Russell M ...

'' Hemsl. * ''

Dioscorea contracta ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' R.Knuth * '' Dioscorea convolvulacea'' Cham. & Schltdl. * ''

Dioscorea convolvulacea subsp. grandifolia ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' (Schltdl.) Uline ex R.Knuth * ''

Dioscorea conzattii ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' R.Knuth * '' Dioscorea cordifolia'' Laness. * ''

Dioscorea coreana ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' (Prain & Burkill) R.Knuth * '' Dioscorea coriacea'' Humb. & Bonpl. ex Willd. * ''

Dioscorea coripatenis ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' J.F.Macbr. * ''

Dioscorea coronata ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' Hauman * ''

Dioscorea cotinifolia ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' Kunth * ''

Dioscorea craibiana ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' Prain & Burkill * ''

Dioscorea crateriflora ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' R.Knuth * '' Dioscorea crotalariifolia'' Uline * '' Dioscorea cruzensis'' R.Knuth * '' Dioscorea cubensis'' R.Knuth * ''

Dioscorea cumingii ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' Prain & Burkill * '' Dioscorea curitybensis'' R.Knuth * ''

Dioscorea cuspidata ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extending ...

'' Humb. & Bonpl. ex Willd. * ''

Dioscorea cuyabensis ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' R.Knuth * '' Dioscorea cyanisticta'' J.D.Sm. * ''

Dioscorea cymosula ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' Hemsl. * ''

Dioscorea cyphocarpa ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' C.B.Rob. ex Knuth

D

* ''

Dioscorea daunea ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' Prain & Burkill * ''

Dioscorea davidsei ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' O.Téllez * ''

Dioscorea de-mourae ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' Uline ex R.Knuth * '' Dioscorea debilis'' Uline ex R.Knuth * ''

Dioscorea decaryana ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' H.Perrier * '' Dioscorea decipiens'' Hook.f. * ''

Dioscorea decorticans ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' C.Presl * ''

Dioscorea deflexa ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' Griseb. * ''

Dioscorea delavayi ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' Franch. * ''

Dioscorea delicata ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' R.Knuth * ''

Dioscorea deltoidea ''Dioscorea deltoidea'', the Nepal yam, is a species of flowering plant in the family Dioscoreaceae. Its native range is the Himalayas through to south-central China and mainland Southeast Asia. Its tubers contain diosgenin Diosgenin, a phytost ...

'' Wall. ex Griseb. * '' Dioscorea dendrotricha'' Uline * ''

Dioscorea densiflora ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' Hemsl. * ''

Dioscorea depauperata ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extending ...

'' Prain & Burkill * ''

Dioscorea diamantinensis ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' R.Knuth * ''

Dioscorea dicranandra ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' Donn.Sm. * '' Dioscorea dielsii'' R.Knuth * ''

Dioscorea dissimulans ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' Prain & Burkill * '' Dioscorea divaricata'' Blanco * '' Dioscorea diversifolia'' Griseb. * ''

Dioscorea dodecaneura ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' Vell. * ''

Dioscorea dregeana ''Dioscorea dregeana'', the wild yam, is a perennial creeper that is native to the eastern parts of southern Africa. It is commonly used and traded as a traditional medicine, or muti. Range It is native to eastern South Africa and Eswatini ...

'' (Kunth) T.Durand & Schinz * ''

Dioscorea duchassaingii ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' R.Knuth * ''

Dioscorea dugesii ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' C.B.Rob. * ''

Dioscorea dumetorum ''Dioscorea dumetorum'', also known as the bitter yam, cluster yam, trifoliate yam, or three-leaved yam, is a species of flowering plant in the yam family, ''Dioscorea.'' It is native to sub-saharan Africa and especially common in the tropical r ...

'' (Kunth) Pax * ''

Dioscorea dumetosa ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' Uline ex R.Knuth

E

* ''

Dioscorea ekmanii ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' R.Knuth * '' Dioscorea elegans'' Ridl. ex Prain & Burkill * '' Dioscorea elephantipes'' (L'Hér.) Engl. * ''

Dioscorea entomophila ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extending ...

'' Hauman * '' Dioscorea epistephioides'' Taub. * '' Dioscorea escuintlensis'' Matuda * ''

Dioscorea esculenta ''Dioscorea esculenta'', commonly known as the lesser yam, is a yam species native to Island Southeast Asia and introduced to Near Oceania and East Africa by early Austronesian voyagers. It is grown for their edible tubers, though it has smalle ...

'' (Lour.) Burkill * ''

Dioscorea esquirolii ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' Prain & Burkill * ''

Dioscorea exalata ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' C.T.Ting & M.C.Chang

F

* ''

Dioscorea fandra ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' H.Perrier * ''

Dioscorea fasciculocongesta ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' (Sosa & B.G.Schub.) O.Téllez * ''

Dioscorea fastigiata ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' Gay * '' Dioscorea fendleri'' R.Knuth * '' Dioscorea ferreyrae'' Ayala * '' Dioscorea filiformis'' Blume * ''

Dioscorea flabellifolia ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extending ...

'' Prain & Burkill * '' Dioscorea flaccida'' R.Knuth * ''

Dioscorea floribunda ''Dioscorea floribunda'', the medicinal yam or mule's-hoof, is a species of flowering plant in the family Dioscoreaceae. It is found from central Mexico to northern Central America. It is grown commercially for its diosgenin Diosgenin, a phytos ...

'' M.Martens & Galeotti * ''

Dioscorea floridana ''Dioscorea floridana'', the Florida yam, is a plant species native to Florida, Alabama, Georgia (U.S. state), Georgia and South Carolina. It grows in wet and sandy places at low elevations. ''Dioscorea floridana'' is a perennial vine twining ov ...

'' Bartlett * ''

Dioscorea fodinarum ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extending ...

'' Kunth * ''

Dioscorea fordii ''Dioscorea fordii'' is a herbaceous vine with oppositely arranged leaves and large, starchy rhizomes which grow vertically into the soil. It is indigenous to the Fujian, Guangdong, Guangxi Guangxi (; ; Chinese postal romanization, alter ...

'' Prain & Burkill * ''

Dioscorea formosana ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' R.Knuth * ''

Dioscorea fractiflexa ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extending ...

'' R.Knuth * ''

Dioscorea fuliginosa ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' R.Knuth * ''

Dioscorea furcata ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' Griseb. * ''

Dioscorea futschauensis ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extending ...

'' Uline ex R.Knuth

G

* ''

Dioscorea galeottiana ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' Kunth * ''

Dioscorea galiiflora ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species exten ...

'' R.Knuth * ''

Dioscorea gallegosi ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extendin ...

'' Matuda * ''

Dioscorea garrettii ''Dioscorea'' is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the sp