Trichocentrum | |
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Trichocentrum haematochilum | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Monocots |
Order: | Asparagales |
Family: | Orchidaceae |
Subfamily: | Epidendroideae |
Tribe: | Cymbidieae |
Subtribe: | Oncidiinae |
Genus: | Trichocentrum Poepp. & Endl. |
Type species | |
Trichocentrum pulchrum Poepp. & Endl. | |
Synonyms [1] | |
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Trichocentrum, often abbreviated Trctm in horticulture, is a genus in the orchid family, Orchidaceae. Dancinglady orchid is a common name for plants in this genus. [2] It was described by Stephan Ladislaus Endlicher and Eduard Friedrich Poeppig in 1836. This genus alone makes up the monogeneric Trichocentrum alliance, a quite distinct lineage of the subtribe Oncidiinae.
The 68 currently recognized species are epiphytes species are distributed in damp forests from Mexico and Florida to Argentina. [1]
The pseudobulbs are reduced. The obtuse, fleshy leaves are 9 cm long. They are broadly elliptic to ovate-lanceolate.
The large, showy flowers grow basally on a short peduncle in a single-flowered to few-flowered raceme. They are white, or white covered with maroon dots. The petals and sepals are similar.
The long lip carries a short spur. This feature distinguishes the genus from other Oncidiinae, in which the spur is an extension of the column. The short column has a pair of apical wings on the stigma. The anther often bears minute papillae. There are two waxy pollinia, connected to elongate stipes.
Trichocentrum species are highly appreciated by orchid growers; some consider them to be among the most beautiful orchids on earth. Culture of members of this genus is highly variable, ranging from the drought-tolerant and easy-to-grow Tiger-like Trichocentrum ( T. tigrinum ) to smaller and more delicate species.
In cultivation they are subject to rot unless provided with conditions similar to those they experience in the wild. Extensive research into the ecological profiles of individual species may be required to achieve success cultivating them. Many species from Central America apparently endure a prolonged drought for at least part of the year, and have developed succulent leaves to deal with these conditions. Plants may shrivel quite severely without long-lasting injury.
The Central and South American species Trichocentrum cebolleta (known formerly as Oncidium cebolleta) has been found to contain a variety of phenanthrenoids. [3] This species is of considerable ethnobotanical interest as one of only a handful of orchids reported to be used as an entheogens. T. cebolleta is used as a substitute for hikuli a.k.a. peyote (the hallucinogenic cactus Lophophora williamsii ) by the Tarahumara of Northern Mexico - a tribe noted for the large number of hallucinogenic plants which it uses in various shamanic and running-related practices. The combination of phenanthrenoid content and employment as entheogens in shamanic practices is to be found also in the Asiatic orchids Vanda tessellata and Dendrobium macraei (- known formerly as Ephemerantha macraei and Flickingeria macraei - see page Flickingeria ). The orchidaceous genera Trichocentrum, Vanda and Dendrobium are all members of the subfamily Epidendroideae and are also placed currently in the subgroup/clade of Higher Epidendroids within the subfamily. Stermitz et al., [4] however, do not report any evidence or suggest that the phenanthrenoids from Trichocentrum possess psychoactive properties.
There is disagreement as to the taxonomic status of some species that have recently been moved from Oncidium to Trichocentrum. Morphological characteristics of "typical" trichocentrums, such as being relatively small and squat with a short, few-to-several flowered inflorescence, contrasts sharply with the larger, heavier oncidiums with long, "mule-ear" leaves and showy, branched inflorescences with many flowers, or the "rat-tail" species with terete leaves.
While studies of molecular phylogeny has caused substantial reclassifications, [5] it is uncertain whether this new scheme will be widely adopted. As with many plants, hybridisation might heavily confound cladistic analyses, though the exact extent is unknown. Hybridisation of Trichocentrum with Oncidium has resulted in the hybrid genus × Trichocidium for example, and similar events in the past would result in unrealistic assessments of relationship based on molecular phylogenetic studies with too limited a scope.
Phragmipedium is a genus of the Orchid family (Orchidaceae) and the only genus comprised in the tribe Phragmipedieae and subtribe Phragmipediinae. The name of the genus is derived from the Greek phragma, which means "division", and pedium, which means "slipper". It is abbreviated 'Phrag' in trade journals.
Stanhopea is a genus of the orchid family (Orchidaceae) from Central and South America. The abbreviation used in horticultural trade is Stan. The genus is named for the 4th Earl of Stanhope (1781-1855), president of the Medico-Botanical Society of London (1829-1837). It comprises 55 species and 5 natural hybrids. These epiphytic, but occasionally terrestrial orchids can be found in damp forests from Mexico to Trinidad to NW Argentina. Their ovate pseudobulbs carry from the top one long, plicate, elliptic leaf.
Gongora, abbreviated Gga in horticultural trade, is a member of the orchid family (Orchidaceae). It consists of 65 species known from Central America, Trinidad, and tropical South America, with most species found in Colombia. They grow across a wide geographical range, from wet forests at sea level, to mountainous regions in the Andes, as high as 1,800 m.
Catasetum, abbreviated as Ctsm. in horticultural trade, is a genus of showy epiphytic Orchids, family Orchidaceae, subfamily Epidendroideae, tribe Cymbidieae, subtribe Catasetinae, with 166 species, many of which are highly prized in horticulture.
Oncidium, abbreviated as Onc. in the horticultural trade, is a genus that contains about 330 species of orchids from the subtribe Oncidiinae of the orchid family (Orchidaceae). As presently conceived, it is distributed across much of South America, Central America, Mexico and the West Indies, with one species (O. ensatum) extending into Florida. Common names for plants in this genus include dancing-lady orchid and golden shower orchid.
Brassia is a genus of orchids classified in the subtribe Oncidiinae. It is native to Mexico, Central America, the West Indies, and northern South America, with one species extending into Florida.
Miltonia, abbreviated Milt. in the horticultural trade, is an orchid genus comprising twelve epiphyte species and eight natural hybrids. The miltonias are exclusively inhabitants of Brazil, except for one species whose range extends from Brazil into the northeast of Argentina and the east of Paraguay.
Odontoglossum, first named in 1816 by Karl Sigismund Kunth, is a genus of about 100 orchids. The scientific name is derived from the Greek words odon (tooth) and glossa (tongue), referring to the two tooth-like calluses on the base of the lip. This genus of cool to cold growing orchids is to be found on open spots in the humid cloud forest at higher elevations from Central- and West South America to Guyana, with most species around the northern Andes. The abbreviation for this genus is Odm. in the horticultural trade.
Kraenzlinella is a genus of flowering plants from the orchid family, Orchidaceae, first described as a genus in 1903. It is native to S Mexico, Central America, and South America.
Microchilus is a neotropical genus of about 75 species belonging to the orchid family (Orchidaceae).
Huntleya is a small orchid genus native to South America, Central America and Trinidad.
Prestonia is a genus of plants in the family Apocynaceae, first described as a genus in 1810. It is native to Mexico, Central America, South America, and the West Indies. It is closely related to Artia and Parsonsia.
Phymatochilum brasiliense is an orchid species, inhabitant of Serra do Mar mountains in Brazilian southeast and northeast, which vegetatively resembles Oncidium species, however, is more closely related to the genus Miltonia. It is the only species of the genus Phymatochilum.
Citharexylum is a genus of flowering plants in the verbena family, Verbenaceae. It contains shrub and tree species commonly known as fiddlewoods or zitherwoods. They are native to the Americas, ranging from southern Florida and Texas in the United States to Argentina. The highest diversity occurs in Mexico and the Andes. The generic name is derived from the Greek words κιθάρα (kithara), meaning "lyre", and ξύλον (xylon), meaning "wood," referring to the use of the wood in the sounding boards of string instruments. Several species, especially C. caudatum and C. spinosum, are cultivated as ornamentals.
Baskervilla is a genus of flowering plants from the orchid family, Orchidaceae. It consists or 10 species native to Central America and South America
Cischweinfia is a genus of flowering plants from the orchid family, Orchidaceae. It was named after Harvard orchidologist Charles Schweinfurth. It has eleven currently recognized species, all native to Central America and northwestern South America.
Otoglossum is a genus of flowering plants from the orchid family, Orchidaceae, native to South America and Central America.
Plectrophora is a genus of flowering plants from the orchid family, Orchidaceae. It is native to Central and South America.
Sarcoglottis is a genus of flowering plants from the orchid family, Orchidaceae. It is widespread across much of Latin America from Mexico to Argentina, with one species extending northward into Trinidad and the Windward Islands.
Leslie Andrew Garay, born Garay László András, was an American botanist. He was the curator of the Oakes Ames Orchid Herbarium at Harvard University, where he succeeded Charles Schweinfurth in 1958. In 1957 he was awarded a Guggenheim Fellowship.