Habenaria

Habenaria, commonly called rein orchids[3] or bog orchids,[4] is a widely distributed genus of orchids in the tribe Orchideae. About 880 species of Habenaria have been formally described. They are native to every continent except Antarctica, growing in both tropical and subtropical zones.[1]

Rein orchids
Habenaria marginata
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Orchidoideae
Tribe: Orchideae
Genus: Habenaria
Willd.[1]
Species

Over 800, see List of Habenaria species

Synonyms[2]

Description

Plants in the genus Habenaria are mainly terrestrial plants with fleshy tubers and upright, tall, thin or fleshy stems. The leaves are either arranged in a rosette at the base of the plants or scattered up the stem. The flowers are resupinate, usually small, white, green or yellowish and arranged along a tall flowering stem. The dorsal sepal and petals overlap to form a hood over the column. The labellum has a spur and usually three lobes which may be short or long and threadlike. The distinguishing feature of the genus is the presence of two club-shaped projections on the stigma.[3][5][6]

Taxonomy and naming

The genus Habenaria was first formally described in 1805 by Carl Ludwig Willdenow and the description was published in Species Plantarum.[1][7] The generic name is derived from the Latin word habena meaning "thong", "strap" or "rein".[8]

Habenaria roxburghii flowers in Talakona, India
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See also

Distribution and habitat

Rein orchids are distributed in tropical and subtropical regions and with centres of diversity in Africa and Brazil. Seventeen species are known in Australia.[3][5]

References
  1. "Habenaria". World Checklist of Selected Plant Families (WCSP). Royal Botanic Gardens, Kew.
  2. "Habenaria Willd". Plants of the World Online. Board of Trustees of the Royal Botanic Gardens, Kew. 2017. Retrieved 20 July 2020.
  3. Jones, David L. (2006). A complete guide to native orchids of Australia including the island territories. Frenchs Forest, N.S.W.: New Holland. pp. 340–345. ISBN 1877069124.
  4. "Taxonomy - Habenaria". UniProt. Retrieved 20 August 2018.
  5. "Habenaria". Pacific Bulb Society. Retrieved 21 August 2018.
  6. "Genus: Habenaria". North American Orchid Conservation Center. Retrieved 21 August 2018.
  7. Willdenow, Carl L. (1805). Species Plantarum (5th ed.). Stockholm: Laurentius Salvius. pp. 5, 44. Retrieved 20 August 2018.
  8. Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 761.
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