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Cycnium
''Cycnium'' is a genus of flowering plants in the family Orobanchaceae. Its native range is tropical and southern Africa and Madagascar. Plants in this genus are annual or perennial hemiparasitic herbs or small shrubs that turn black when they die. Leaves usually occur opposite or near-opposite, but occasionally alternate or in whorls of three. Leaves may pinnatisect or bipinnatisect, with incised or entire margins, and may be sessile or shortly petiolate. Flowers may be terminally spicate or racemose, solitary- axillary, or supra-axillary. Flowers are edicellate to sessile or subsessile. Bracts are leaf-like. In species in which they are present, bracteoles are inserted on the pedicel or are adnate to the base of the calyx tube. The tube-ridged calyx has 4-5 lobes which are equal or subequal. The corolla is 5-lobed and salver-form. The tube is curved, bent, or straight, covered with stipitate glands and with a unilaterally bearded throat. The limb is bilabiate and zygomor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cycnium Chevalieri
''Cycnium'' is a genus of flowering plants in the family Orobanchaceae. Its native range is tropical and southern Africa and Madagascar. Plants in this genus are annual or perennial hemiparasitic herbs or small shrubs that turn black when they die. Leaves usually occur opposite or near-opposite, but occasionally alternate or in whorls of three. Leaves may pinnatisect or bipinnatisect, with incised or entire margins, and may be sessile or shortly petiolate. Flowers may be terminally spicate or racemose, solitary- axillary, or supra-axillary. Flowers are edicellate to sessile or subsessile. Bracts are leaf-like. In species in which they are present, bracteoles are inserted on the pedicel or are adnate to the base of the calyx tube. The tube-ridged calyx has 4-5 lobes which are equal or subequal. The corolla is 5-lobed and salver-form. The tube is curved, bent, or straight, covered with stipitate glands and with a unilaterally bearded throat. The limb is bilabiate and zygomor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cycnium Adonense
''Cycnium'' is a genus of flowering plants in the family Orobanchaceae. Its native range is tropical and southern Africa and Madagascar. Plants in this genus are annual or perennial hemiparasitic herbs or small shrubs that turn black when they die. Leaves usually occur opposite or near-opposite, but occasionally alternate or in whorls of three. Leaves may pinnatisect or bipinnatisect, with incised or entire margins, and may be sessile or shortly petiolate. Flowers may be terminally spicate or racemose, solitary- axillary, or supra-axillary. Flowers are edicellate to sessile or subsessile. Bracts are leaf-like. In species in which they are present, bracteoles are inserted on the pedicel or are adnate to the base of the calyx tube. The tube-ridged calyx has 4-5 lobes which are equal or subequal. The corolla is 5-lobed and salver-form. The tube is curved, bent, or straight, covered with stipitate glands and with a unilaterally bearded throat. The limb is bilabiate and zygomorphic, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cycnium Cameronianum
''Cycnium'' is a genus of flowering plants in the family Orobanchaceae. Its native range is tropical and southern Africa and Madagascar. Plants in this genus are annual or perennial hemiparasitic herbs or small shrubs that turn black when they die. Leaves usually occur opposite or near-opposite, but occasionally alternate or in whorls of three. Leaves may pinnatisect or bipinnatisect, with incised or entire margins, and may be sessile or shortly petiolate. Flowers may be terminally spicate or racemose, solitary- axillary, or supra-axillary. Flowers are edicellate to sessile or subsessile. Bracts are leaf-like. In species in which they are present, bracteoles are inserted on the pedicel or are adnate to the base of the calyx tube. The tube-ridged calyx has 4-5 lobes which are equal or subequal. The corolla is 5-lobed and salver-form. The tube is curved, bent, or straight, covered with stipitate glands and with a unilaterally bearded throat. The limb is bilabiate and zygomor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cycnium Breviflorum
''Cycnium'' is a genus of flowering plants in the family Orobanchaceae. Its native range is tropical and southern Africa and Madagascar. Plants in this genus are annual or perennial hemiparasitic herbs or small shrubs that turn black when they die. Leaves usually occur opposite or near-opposite, but occasionally alternate or in whorls of three. Leaves may pinnatisect or bipinnatisect, with incised or entire margins, and may be sessile or shortly petiolate. Flowers may be terminally spicate or racemose, solitary- axillary, or supra-axillary. Flowers are edicellate to sessile or subsessile. Bracts are leaf-like. In species in which they are present, bracteoles are inserted on the pedicel or are adnate to the base of the calyx tube. The tube-ridged calyx has 4-5 lobes which are equal or subequal. The corolla is 5-lobed and salver-form. The tube is curved, bent, or straight, covered with stipitate glands and with a unilaterally bearded throat. The limb is bilabiate and zygomor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cycnium Angolense
''Cycnium'' is a genus of flowering plants in the family Orobanchaceae. Its native range is tropical and southern Africa and Madagascar. Plants in this genus are annual or perennial hemiparasitic herbs or small shrubs that turn black when they die. Leaves usually occur opposite or near-opposite, but occasionally alternate or in whorls of three. Leaves may pinnatisect or bipinnatisect, with incised or entire margins, and may be sessile or shortly petiolate. Flowers may be terminally spicate or racemose, solitary- axillary, or supra-axillary. Flowers are edicellate to sessile or subsessile. Bracts are leaf-like. In species in which they are present, bracteoles are inserted on the pedicel or are adnate to the base of the calyx tube. The tube-ridged calyx has 4-5 lobes which are equal or subequal. The corolla is 5-lobed and salver-form. The tube is curved, bent, or straight, covered with stipitate glands and with a unilaterally bearded throat. The limb is bilabiate and zygomor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cycnium Ajugifolium
''Cycnium'' is a genus of flowering plants in the family Orobanchaceae. Its native range is tropical and southern Africa and Madagascar. Plants in this genus are annual or perennial hemiparasitic herbs or small shrubs that turn black when they die. Leaves usually occur opposite or near-opposite, but occasionally alternate or in whorls of three. Leaves may pinnatisect or bipinnatisect, with incised or entire margins, and may be sessile or shortly petiolate. Flowers may be terminally spicate or racemose, solitary- axillary, or supra-axillary. Flowers are edicellate to sessile or subsessile. Bracts are leaf-like. In species in which they are present, bracteoles are inserted on the pedicel or are adnate to the base of the calyx tube. The tube-ridged calyx has 4-5 lobes which are equal or subequal. The corolla is 5-lobed and salver-form. The tube is curved, bent, or straight, covered with stipitate glands and with a unilaterally bearded throat. The limb is bilabiate and zygomor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cycnium Tubulosum
''Cycnium tubulosum'', also known as the vlei ink-flower and the tissue paper flower, is a slender hemiparasitic perennial plant of the broomrape family. Its range includes much of southern and eastern Africa, from South Africa to Ethiopia, including Madagascar. It has creeping, straggling or upright stems, with few narrow, entire leaves and erect, white or pinkish, slightly zygomorph flowers on a long tube, with five lobes, reminiscent of a ''Phlox''-flower. It may not always be fully dependent on the supply of minerals by other plants, but usually makes connections with the roots of grasses. It can be found in moist, short grasslands, reaching altitudes of about . Its conservation status in South-Africa is "least concern". Description The vlei ink-flower is a hairless or nearly hairless, hemiparasitic, high perennial herbaceous plant, with angular stems having four flat sides, which are creeping, straggling or upright, that may have side branches or not, and sometimes there ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orobanchaceae
Orobanchaceae, the broomrapes, is a family of mostly parasitic plants of the order Lamiales, with about 90 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 herbs or perennial herbs or shrubs, and most (all except ''Lindenbergia'', ''Rehmannia'' and ''Triaenophora'') are parasitic on the roots of other plants—either holoparasitic or hemiparasitic (fully or partly parasitic). The holoparasitic species lack chlorophyll and therefore cannot perform photosynthesis. Description Orobanchaceae is the largest of the 20–28 dicot fami ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sessility (botany)
In botany, sessility (meaning "sitting", used in the sense of "resting on the surface") is a characteristic of plant parts (such as flowers and leaves) that have no stalk. Plant parts can also be described as subsessile, that is, not completely sessile. A sessile flower is one that lacks a pedicel (flower stalk). A flower that is not sessile is pedicellate. For example, the genus ''Trillium'' is partitioned into two subgenera, the sessile-flowered trilliums (''Trillium'' subg. ''Sessilium'') and the pedicellate-flowered trilliums. Sessile leaves lack petioles (leaf stalks). A leaf that is not sessile is petiolate. For example, the leaves of most monocotyledons lack petioles. The term sessility is also used in mycology to describe a fungal fruit body that is attached to or seated directly on the surface of the substrate, lacking a supporting stipe or pedicel Pedicle or pedicel may refer to: Human anatomy *Pedicle of vertebral arch, the segment between the transvers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theca
In biology, a theca (plural thecae) is a sheath or a covering. Botany In botany, the theca is related to plant's flower anatomy. The theca of an angiosperm consists of a pair of microsporangia that are adjacent to each other and share a common area of dehiscence called the stomium. Larry Hufford, "The origin and early evolution of angiosperm stamens" i''The Anther: form, function, and phylogeny'' William G. D'Arcy and Richard C. Keating (editors), Cambridge University Press, 1996, 351pp, p.60, (from Google Books) Any part of a microsporophyll that bears microsporangia is called an anther. Most anthers are formed on the apex of a filament. An anther and its filament together form a typical (or filantherous) stamen, part of the male floral organ. The typical anther is bilocular, i.e. it consists of two thecae. Each theca contains two microsporangia, also known as pollen sacs. The microsporangia produce the microspores, which for seed plants are known as pollen grains. If t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Madagascar
Madagascar (; mg, Madagasikara, ), officially the Republic of Madagascar ( mg, Repoblikan'i Madagasikara, links=no, ; french: République de Madagascar), is an island country in the Indian Ocean, approximately off the coast of East Africa across the Mozambique Channel. At Madagascar is the world's List of island countries, second-largest island country, after Indonesia. The nation is home to around 30 million inhabitants and consists of the island of Geography of Madagascar, Madagascar (the List of islands by area, fourth-largest island in the world), along with numerous smaller peripheral islands. Following the prehistoric breakup of the supercontinent Gondwana, Madagascar split from the Indian subcontinent around 90 million years ago, allowing native plants and animals to evolve in relative isolation. Consequently, Madagascar is a biodiversity hotspot; over 90% of wildlife of Madagascar, its wildlife is endemic. Human settlement of Madagascar occurred during or befo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hemiparasitic
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 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 water and nutrients from the host. 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 plants by detecting volatile chemicals in the air or soil given ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
