''Thonningia'' is a
monotypic genus
In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispe ...
of flowering plants in the family
Balanophoraceae
The Balanophoraceae are a subtropical to tropical family of obligate parasitic flowering plants, notable for their unusual development and formerly obscure affinities. In the broadest circumscription, the family consists of 16 genera. Alterna ...
containing the single species ''Thonningia sanguinea''.
[Nickrent, D]
Parasitic Plant Classification.
The Parasitic Plant Connection. Department of Plant Biology, Southern Illinois University, Carbondale.[Leistner, O. A. (2005)]
Balanophoraceae.
''Seed Plants of Southern Tropical Africa: Families and Genera''. Southern African Botanical Diversity Network Report No. 26. pg 103. It is distributed throughout much of southern and western Africa, particularly the
tropical
The tropics are the regions of Earth surrounding the equator, where the sun may shine directly overhead. This contrasts with the temperate or polar regions of Earth, where the Sun can never be directly overhead. This is because of Earth's ax ...
regions.
[Burkill, H. M. (1985)]
''Thonningia sanguinea''.
''The Useful Plants of West Tropical Africa, Vol 1.'' Royal Botanic Gardens, Kew. A familiar plant to humans, it has an extremely long list of common names in many African languages. Many names are inspired by the resemblance of the plant's inflorescence
In botany, an inflorescence is a group or cluster of flowers arranged on a plant's Plant stem, stem that is composed of a main branch or a system of branches. An inflorescence is categorized on the basis of the arrangement of flowers on a mai ...
to a pineapple
The pineapple (''Ananas comosus'') is a Tropical vegetation, tropical plant with an edible fruit; it is the most economically significant plant in the family Bromeliaceae.
The pineapple is indigenous to South America, where it has been culti ...
or palm tree
The Arecaceae () is a family of perennial, flowering plants in the monocot order Arecales. Their growth form can be climbers, shrubs, tree-like and stemless plants, all commonly known as palms. Those having a tree-like form are colloquially c ...
.Igala
Igala or IGALA may refer to:
* IGALA, the International Gender and Language Association, an interdisciplinary academic organization
* Igala Kingdom, a pre-colonial West African state
* Igala language, a Volta–Niger language
* Igala people
...
), and crown of the ground (from Yoruba).[
]
Description
This species is a fleshy dioecious
Dioecy ( ; ; adj. dioecious, ) is a characteristic of certain species that have distinct unisexual individuals, each producing either male or female gametes, either directly (in animals) or indirectly (in seed plants). Dioecious reproduction is ...
herb growing from an underground tuber
Tubers are a type of enlarged structure that plants use as storage organs for nutrients, derived from stems or roots. Tubers help plants perennate (survive winter or dry months), provide energy and nutrients, and are a means of asexual reproduc ...
. It is parasitic
Parasitism is a close relationship between species, where one organism, the parasite, lives (at least some of the time) on or inside another organism, the host, causing it some harm, and is adapted structurally to this way of life. The ent ...
on other plants via its tuber. The branching, yellowish tuber extends horizontally up to 10 or 15 centimeters through the soil. It forms bulb-like swellings at the points where it attaches to the roots of its host plants. These swellings, or gall
Galls (from the Latin , 'oak-apple') or ''cecidia'' (from the Greek , anything gushing out) are a kind of swelling growth on the external tissues of plants. Plant galls are abnormal outgrowths of plant tissues, similar to benign tumors or war ...
s, can reach over 18 centimeters wide.rhizome
In botany and dendrology, a rhizome ( ) is a modified subterranean plant stem that sends out roots and Shoot (botany), shoots from its Node (botany), nodes. Rhizomes are also called creeping rootstalks or just rootstalks. Rhizomes develop from ...
, but there is no true rhizome. The stem is coated with spirals of scale-like leaves. The leaves are not green; there is no chlorophyll
Chlorophyll is any of several related green pigments found in cyanobacteria and in the chloroplasts of algae and plants. Its name is derived from the Greek words (, "pale green") and (, "leaf"). Chlorophyll allows plants to absorb energy ...
, as the plant obtains nutrients from hosts and does not need to photosynthesize
Photosynthesis ( ) is a system of biological processes by which photosynthetic organisms, such as most plants, algae, and cyanobacteria, convert light energy, typically from sunlight, into the chemical energy necessary to fuel their metaboli ...
. The flowering stem emerges from the ground to produce a bright red or pink inflorescence containing male and female flowers. The crowded flower heads are covered in scales. The inflorescence is up to 15 to 20 centimeters long.[
]
Habitat, distribution, and ecology
This plant grows in forests and other habitat.[ It can often be found in ]plantation
Plantations are farms specializing in cash crops, usually mainly planting a single crop, with perhaps ancillary areas for vegetables for eating and so on. Plantations, centered on a plantation house, grow crops including cotton, cannabis, tob ...
s, where it parasitizes such crop trees as ''Hevea brasiliensis
''Hevea brasiliensis'', the Pará rubber tree, ''sharinga'' tree, seringueira, or most commonly, rubber tree or rubber plant, is a flowering plant belonging to the spurge family, Euphorbiaceae, originally native to the Amazon basin, but is now p ...
'' (rubber
Rubber, also called India rubber, latex, Amazonian rubber, ''caucho'', or ''caoutchouc'', as initially produced, consists of polymers of the organic compound isoprene, with minor impurities of other organic compounds.
Types of polyisoprene ...
), ''Phoenix dactylifera
''Phoenix dactylifera'', commonly known as the date palm, is a flowering-plant species in the palm family Arecaceae, cultivated for its edible sweet #Fruits, fruit called dates. The species is widely cultivated across North Africa, northern A ...
'' (date
Date or dates may refer to:
* Date, the fruit of the date palm (''Phoenix dactylifera'')
* Jujube, also known as red date or Chinese date, the fruit of ''Ziziphus jujuba''
Social activity
*Dating, a form of courtship involving social activi ...
), and ''Theobroma cacao
''Theobroma cacao'' (cacao tree or cocoa tree) is a small ( tall) evergreen tree in the Malvaceae family. Its seedscocoa beansare used to make chocolate liquor, cocoa solids, cocoa butter and chocolate. Although the tree is native to the tropi ...
'' (cocoa
Cocoa may refer to:
Chocolate
* Chocolate
* ''Theobroma cacao'', the cocoa tree
* Cocoa bean, seed of ''Theobroma cacao''
* Chocolate liquor, or cocoa liquor, pure, liquid chocolate extracted from the cocoa bean, including both cocoa butter and ...
).[Jigam, A. A., et al. (2012)]
Efficacy of ''Thonningia Sanguinea'' Vahl. (Balanophoraceae) root extract against ''Plasmodium berghei'', ''Plasmodium chabaudi'', inflammation and nociception in mice.
''Journal of Applied Pharmaceutical Science'' 2(1) 47–51.
This species is pollinated
Pollination is the transfer of pollen from an anther of a plant to the stigma of a plant, later enabling fertilisation and the production of seeds. Pollinating agents can be animals such as insects, for example bees, beetles or butterflies; bird ...
by flies
Flies are insects of the Order (biology), order Diptera, the name being derived from the Ancient Greek, Greek δι- ''di-'' "two", and πτερόν ''pteron'' "wing". Insects of this order use only a single pair of wings to fly, the hindwin ...
and ant
Ants are Eusociality, eusocial insects of the Family (biology), family Formicidae and, along with the related wasps and bees, belong to the Taxonomy (biology), order Hymenoptera. Ants evolved from Vespoidea, vespoid wasp ancestors in the Cre ...
s. Flies of the families Muscidae
Muscidae are a family of flies found in the superfamily Muscoidea.
Muscidae, some of which are commonly known as house flies or stable flies due to their synanthropy, are worldwide in distribution and contain almost 4,000 described species i ...
and Calliphoridae
The Calliphoridae (commonly known as blowflies, blow flies, blow-flies, carrion flies, bluebottles, or greenbottles) are a family of insects in the order Diptera, with almost 1,900 known species. The maggot larvae, often used as fishing bait, ...
and ants of genus ''Technomyrmex
''Technomyrmex'' is a genus of ants in the subfamily Dolichoderinae. With 98 species, it is one of the largest and most diverse ant genera in the Dolichoderinae. The genus distributed throughout the tropical and subtropical zones with most specie ...
'' visit the flowers to obtain nectar
Nectar is a viscous, sugar-rich liquid produced by Plant, plants in glands called nectaries, either within the flowers with which it attracts pollination, pollinating animals, or by extrafloral nectaries, which provide a nutrient source to an ...
, pollinating the flowers as they enter. Muscid flies of genus '' Morellia'' lay eggs in the flowers and the larvae feed on the male flowers when they emerge. This could be an example of mutualism
Mutualism may refer to:
* Mutualism (biology), positive interactions between species
* Mutualism (economic theory), associated with Pierre-Joseph Proudhon
* Mutualism (movement), social movement promoting mutual organizations
* Mutualism model o ...
; as the fly pollinates the plant, it provides a site for egg-laying and nutrition for the larvae.
Uses
The plant is used as a traditional remedy in many African cultures. This includes in those with sexually transmitted disease
A sexually transmitted infection (STI), also referred to as a sexually transmitted disease (STD) and the older term venereal disease (VD), is an infection that is spread by sexual activity, especially vaginal intercourse, anal sex, or ...
s in Ghana
Ghana, officially the Republic of Ghana, is a country in West Africa. It is situated along the Gulf of Guinea and the Atlantic Ocean to the south, and shares borders with Côte d’Ivoire to the west, Burkina Faso to the north, and Togo to t ...
.[ In those with ]diarrhea
Diarrhea (American English), also spelled diarrhoea or diarrhœa (British English), is the condition of having at least three loose, liquid, or watery bowel movements in a day. It often lasts for a few days and can result in dehydration d ...
in the Congo.[ A portion of the leaves is used in those with ]worms
The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive catalogue and list of names of marine organisms.
Content
The content of the registry is edited and maintained by scien ...
. Mixed with ''Capsicum'', it is used topically on hemorrhoid
Hemorrhoids (or haemorrhoids), also known as piles, are vascular structures in the anal canal. In their normal state, they are cushions that help with stool control. They become a disease when swollen or inflamed; the unqualified term ''h ...
s and torticollis
Torticollis, also known as wry neck, is an extremely painful, dystonic condition defined by an abnormal, asymmetrical head or neck position, which may be due to a variety of causes. The term ''torticollis'' is derived .
The most common case ha ...
.[ It is used for ]leprosy
Leprosy, also known as Hansen's disease (HD), is a Chronic condition, long-term infection by the bacteria ''Mycobacterium leprae'' or ''Mycobacterium lepromatosis''. Infection can lead to damage of the Peripheral nervous system, nerves, respir ...
, skin infections and abscess
An abscess is a collection of pus that has built up within the tissue of the body, usually caused by bacterial infection. Signs and symptoms of abscesses include redness, pain, warmth, and swelling. The swelling may feel fluid-filled when pre ...
es, dental caries
Tooth decay, also known as caries,The word 'caries' is a mass noun, and is not a plural of 'carie'.'' is the breakdown of teeth due to acids produced by bacteria. The resulting cavities may be a number of different colors, from yellow to black ...
, gingivitis
Gingivitis is a non-destructive disease that causes inflammation of the gums; ulitis is an alternative term. The most common form of gingivitis, and the most common form of periodontal disease overall, is in response to bacterial biofilms (also ...
, and heart disease
Cardiovascular disease (CVD) is any disease involving the heart or blood vessels. CVDs constitute a class of diseases that includes: coronary artery diseases (e.g. angina pectoris, angina, myocardial infarction, heart attack), heart failure, ...
. In Zaire
Zaire, officially the Republic of Zaire, was the name of the Democratic Republic of the Congo from 1971 to 18 May 1997. Located in Central Africa, it was, by area, the third-largest country in Africa after Sudan and Algeria, and the 11th-la ...
, it is said to prevent incontinence
Incontinence or Incontinent may refer to:
* Urinary incontinence, the most commonly occurring type of incontinence, the involuntary excretion of urine
*Fecal incontinence
Fecal incontinence (FI), or in some forms, encopresis, is a lack of con ...
and bedwetting
Nocturnal enuresis (NE), also informally called bedwetting, is involuntary urination while asleep after the age at which bladder control usually begins. Bedwetting in children and adults can result in emotional stress. Complications can inclu ...
.[
The other uses for the plant include as an ingredient in the poison applied to hunting arrows by peoples of Côte d'Ivoire.][ It is also known as a flavoring for soup.][ In some areas, the flower heads are considered to be an ]aphrodisiac
An aphrodisiac is a substance that increases libido, sexual desire, sexual attraction, sexual pleasure, or sexual behavior. These substances range from a variety of plants, spices, and foods to synthetic chemicals. Natural aphrodisiacs, such as ...
.[ In Ghana and Côte d'Ivoire, the spiky flower heads are tied to the ankles of ]toddler
A toddler is a child approximately 1 to 3 years old, though definitions vary. The toddler years are a time of great cognitive, emotional and social development. The word is derived from "toddle", which means to walk unsteadily, as children at thi ...
s to encourage them to learn to walk; the spikes keep them from sitting down.[ All parts of the plant are used.][
The plant is considered a ]weed
A weed is a plant considered undesirable in a particular situation, growing where it conflicts with human preferences, needs, or goals.Harlan, J. R., & deWet, J. M. (1965). Some thoughts about weeds. ''Economic botany'', ''19''(1), 16-24. Pla ...
in some places, such as rubber plantations, where it can become abundant.[Idu, M., et al. (2002)]
Anatomy of attachment of the root parasite ''Thonningia sanguinea'' Vahl. on ''Hevea brasiliensis''.
''Indian Journal of Rubber Research'' 15(1) 33–35.
References
{{Taxonbar, from=Q17086327
Monotypic Santalales genera
Parasitic plants
Plants used in traditional African medicine
Balanophoraceae
Taxa named by Martin Vahl
Dioecious plants