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Broomrape
''Orobanche'', commonly known as broomrape, is a genus of almost 200 species of small parasitic herbaceous plants, mostly native to the temperate Northern Hemisphere. It is the type genus of the broomrape family Orobanchaceae. It is a weed on broadleaf crop plants in Australia, where some states enforce mandatory destruction and reporting, as well as prohibition of sale. Description Broomrapes are generally small, only tall depending on species. They are best recognized by the yellow- to straw-coloured stems completely lacking chlorophyll, bearing yellow, white, or blue snapdragon-like flowers. The flower shoots are scaly, with a dense terminal spike of 10-20 flowers in most species, although single in one-flowered broomrape (''Orobanche uniflora''). The leaves are merely triangular scales. The seeds are minute, tan or brown, blackening with age. These plants generally flower from late winter to late spring. When they are not flowering, no part of the plants is visible above ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orobanche Alsatica
''Orobanche'', commonly known as broomrape, is a genus of almost 200 species of small Parasitic plant, parasitic herbaceous plants, mostly native to the temperate climate, temperate Northern Hemisphere. It is the type genus of the Orobanchaceae, broomrape family Orobanchaceae. It is a weed on broadleaf crop plants in Australia, where some states enforce mandatory destruction and reporting, as well as prohibition of sale. Description Broomrapes are generally small, only tall depending on species. They are best recognized by the yellow- to straw-coloured stems completely lacking chlorophyll, bearing yellow, white, or blue Antirrhinum, snapdragon-like flowers. The flower shoots are scaly, with a dense terminal spike of 10-20 flowers in most species, although single in Orobanche uniflora, one-flowered broomrape (''Orobanche uniflora''). The leaves are merely triangular scales. The seeds are minute, tan or brown, blackening with age. These plants generally flower from late winter to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orobanche Aconiti-lycoctoni
''Orobanche'', commonly known as broomrape, is a genus of almost 200 species of small parasitic herbaceous plants, mostly native to the temperate Northern Hemisphere. It is the type genus of the broomrape family Orobanchaceae. It is a weed on broadleaf crop plants in Australia, where some states enforce mandatory destruction and reporting, as well as prohibition of sale. Description Broomrapes are generally small, only tall depending on species. They are best recognized by the yellow- to straw-coloured stems completely lacking chlorophyll, bearing yellow, white, or blue snapdragon-like flowers. The flower shoots are scaly, with a dense terminal spike of 10-20 flowers in most species, although single in one-flowered broomrape (''Orobanche uniflora''). The leaves are merely triangular scales. The seeds are minute, tan or brown, blackening with age. These plants generally flower from late winter to late spring. When they are not flowering, no part of the plants is visible above ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orobanche Hederae
''Orobanche hederae'', the ivy broomrape, is, like other members of the genus ''Orobanche'', a parasitic plant without chlorophyll, and thus totally dependent on its host, which is ivy. It grows to , with stems in shades of brown and purple, sometimes yellow. The flowers are long, cream in colour with reddish-purple veins. Etymology ''Orobanche'' is derived from Greek, and means 'bitter vetch strangler' or 'legume strangler'. This name originates from the species '' Orobanche rapum-genistae'', which parasitizes legumes. The name ''hederae'' means 'of ivy', in reference to its host plant, ''Hedera''. Its common name in English is ''ivy broomrape''. It is also called ''frare de l'heura'' in Catalan, ''bršljanov volovod'' in Croatian, ''záraza břečťanová'' in Czech, ''vedbend-gyvelkvæler'' in Danish, ''klimopbremraap'' in Dutch, ''orobanche du lierre'' in French, ''klimmerblêdfretter'' in Frysk, ''efeuwürger'' and ''efeu-sommerwurz'' in German, ''borostyán-vajvirág'' in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orobanche Aegyptiaca
''Orobanche aegyptiaca'', the Egyptian broomrape, is a plant which is an obligate holoparasite from the family Orobanchaceae with a complex lifecycle. This parasite is most common in the Middle East and has a wide host range including many economically important crops. Selective control of Egyptian broomrape is extremely difficult because the close association between host crop and parasite limits the use of most mechanical and herbicidal approaches. Disease cycle A single Egyptian broomrape plant is capable of producing hundreds of thousands of extremely small ( long) seeds. These seeds, dispersed by the wind, animals, or by more artificial means such as farm machinery, survive in the soil and have the ability to remain viable in the soil for more than 15 years. When the seeds are dropped, they are dormant. They require after-ripening, or further ripening after the seed has fallen from the plant, which is completed by the time the dry season has ended. As the rainy seas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orobanche Alba
''Orobanche alba'', also known by its common names thyme broomrape and red broomrape, is a holoparasitic plant of the broomrape family. It parasitises plants from the mint family. It is native to countries across Europe, the Middle East, Asia, and North Africa. As ''Orobanche alba'' is polymorphic and has been relatively poorly studied, there is often uncertainty over taxonomy and classification. Description ''Orobanche alba'' is a short reddish annual with simple flowering stems. They grow between tall. Plants have fragrant flowers, cylindrical campanulate (bell-shaped) corolla with dark glands, and calyx teeth which are usually 'entire' (consisting of a single piece). The plant generally flowers from May to June (though in rare cases it flowering can occur into early September) and is pollinated by bumblebees. Subspecies ''Orobanche alba'' has four accepted infraspecific names: *''Orobanche alba'' subsp. ''alba'': Originally described as ''Orobanche rubra''. It generally ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orobanche Minor
''Orobanche minor'', the hellroot, common broomrape, lesser broomrape, small broomrape, broomrape minor or clover broomrape, is a holoparasitic flowering plant belonging to the family Orobanchaceae. It is one of about 150 Photosynthesis, non-photosynthetic plants in the genus ''Orobanche'' that Parasitism, parasitize autotrophic plants. Characteristics and growth requirements ''Orobanche minor'' grows to and is a perennial. The flowers are hermaphrodite. Common broomrape grows in a wide variety of soils, namely moist, light (sandy), medium (loamy) and heavy (clay) soils that are acid, neutral or basic. It can grow in semi-shade or in full sunlight. The species appears in a wide range of colours from red-brown, yellow-brown to purple. Yellow specimens are also not uncommon and it is this extreme variability that makes identification on the basis of size or colour uncertain. It is parasitic on various members of the pea (Fabaceae) and daisy (Asteraceae) families. Although wid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orobanche Uniflora
''Orobanche uniflora'', commonly known as one-flowered broomrape, one-flowered cancer root, ghost pipe or naked broomrape, is an annual parasitic herbaceous plant. It is native to much of North America, where it is a parasitic plant, tapping nutrients from many other species of plants, including those in the families Asteraceae and Saxifragaceae and in the genus ''Sedum''. The name "orobanche" can be translated to "vetch-strangler" and "uniflora" can be translated to "single-flower". Description ''Orobanche uniflora'' grows to in height, with one purple-to-white flower with five petals per stem. The corolla is two-lipped, finely fringed with five similar lobes. The main stem is under the ground, with only the pedicels being seen and each pedicel containing only one flower. The stems are grayish tan. No leaves are on the plant or offshoot from it. It reproduces from its seeds, which are produced from fruit that has two sections. Many seeds are produced from the plant's fruit. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orobanchaceae
Orobanchaceae, the broomrapes, is a family (biology), family of mostly parasitic plants of the order (biology), order Lamiales, with about 90 genus, genera and more than 2000 species. Many of these genera (e.g., ''Pedicularis'', ''Rhinanthus'', ''Striga'') were formerly included in the family Scrophulariaceae ''sensu lato''. With its new circumscription, Orobanchaceae forms a distinct, monophyletic family. From a phylogenetic perspective, it is defined as the largest crown clade containing ''Orobanche major'' and relatives, but neither ''Paulownia tomentosa'' nor ''Phryma leptostachya'' nor ''Mazus japonicus''. The Orobanchaceae are annual plant, annual herbaceous plant, herbs or perennial plant, perennial herbs or shrubs, and most (all except ''Lindenbergia'', ''Rehmannia'' and ''Triaenophora'') are parasitic plant, parasitic on the roots of other plants—either holoparasitic or hemiparasitic (fully or partly parasitic). The holoparasitic species lack chlorophyll and therefore ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parasitic Plant
A parasitic plant is a plant that derives some or all of its nutritional requirements from another living plant. They make up about 1% of angiosperms and are found in almost every biome. All Parasite, parasitic plants develop a specialized organ called the haustorium, which penetrates the host plant, connecting them to the host vasculature—either the xylem, phloem, or both. For example, plants like ''Striga'' or ''Rhinanthus'' connect only to the xylem, via xylem bridges (xylem-feeding). Alternately, plants like ''Cuscuta'' and some members of ''Orobanche'' connect to both the xylem and phloem of the host. This provides them with the ability to extract resources from the host. These resources can include water, nitrogen, carbon and/or sugars. Parasitic plants are classified depending on the location where the parasitic plant latches onto the host (root or stem), the amount of nutrients it requires, and their photosynthetic capability. Some parasitic plants can locate their host ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orobanche Ramosa
''Orobanche ramosa'' is a species of broomrape known by the common names hemp broomrape and branched broomrape. It is native to Eurasia and North Africa, but it is known in many other places as an introduced species and sometimes a noxious weed. It is a pest in agricultural fields, infesting crops including tobacco, potato, and tomato. The plant produces many slender, erect stems from a thick root. The yellowish stems grow 10 to 60 centimeters tall and are coated in glandular hairs. The broomrape is parasitic on other plants, draining nutrients from their roots, and it lacks leaves and chlorophyll. The inflorescence bears several flowers, each in a yellowish calyx of sepal A sepal () is a part of the flower of angiosperms (flowering plants). Usually green, sepals typically function as protection for the flower in bud, and often as support for the petals when in bloom., p. 106 Etymology The term ''sepalum'' ...s and with a tubular white and blue to purple corolla. R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 from light. Those pigments are involved in oxygenic photosynthesis, as opposed to bacteriochlorophylls, related molecules found only in bacteria and involved in anoxygenic photosynthesis. Chlorophylls absorb light most strongly in the blue portion of the electromagnetic spectrum as well as the red portion. Conversely, it is a poor absorber of green and near-green portions of the spectrum. Hence chlorophyll-containing tissues appear green because green light, diffusively reflected by structures like cell walls, is less absorbed. Two types of chlorophyll exist in the photosystems of green plants: chlorophyll ''a'' and ''b''. History Chlorophyll was first isolated and named by Joseph Bienaimé Caventou and Pierre Joseph Pelletier in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Celery
Celery (''Apium graveolens'' Dulce Group or ''Apium graveolens'' var. ''dulce'') is a cultivated plant belonging to the species ''Apium graveolens'' in the family Apiaceae that has been used as a vegetable since ancient times. The original wild species has been selectively bred over centuries into three primary cultivar groups: stalk celery (Dulce Group), consumed for its fibrous edible stalks; leaf celery (Secalinum Group), grown for its aromatic leaves; and celeriac (Rapaceum Group), cultivated for its large, edible hypocotyl. Celery is characterized by its long, ribbed stalks, pinnate leaves, and small white flowers arranged in umbels. Celery is composed primarily of water (95%) but contains large amounts of vitamin K and negligible fat. The vegetable is commonly consumed raw in salads, cooked in soups and stews, or juiced. Celery seeds, which have a strong, aromatic flavor, are used as a spice or processed into celery salt. Celery is among a small group of foods that may pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
