Habenaria

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Rein orchids
Habenaria marginata (Golden Yellow Habenaria) W IMG 1983.jpg
Habenaria marginata
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Orchidoideae
Tribe: Orchideae
Subtribe: Orchidinae
Genus: Habenaria
Willd. [1]
Species

Over 800, see List of Habenaria species

Synonyms [2]
List
    • AlaSzlach.
    • AlinorchisSzlach.
    • AoplaLindl.
    • ArachnariaSzlach.
    • AteLindl.
    • BertauxiaSzlach.
    • BilabrellaLindl.
    • CentrochilusSchauer
    • CeratopetalorchisSzlach., Górniak & Tukallo
    • DiplectradenRaf.
    • DissorhynchiumSchauer
    • FimbrorchisSzlach.
    • HabenellaSmall
    • HabenorkisThouars
    • ItaculumiaHoehne
    • KraenzlinorchisSzlach.
    • Kryptostoma(Summerh.) Geerinck
    • KusibabellaSzlach.
    • MacrocentrumPhil.
    • Macrura(Kraenzl.) Szlach. & Sawicka
    • MedusorchisSzlach.
    • MesiceraRaf.
    • MirandorchisSzlach. & Kras-Lap.
    • MontolivaeaRchb.f.
    • NemuranthesRaf.
    • OchyrorchisSzlach.
    • OdishaS.Misra
    • PlantaginorchisSzlach.
    • PlatantheroidesSzlach.
    • PlatycorynoidesSzlach.
    • Plectoglossa(Hook.f.) K.Prasad & Venu
    • PodandriaRolfe
    • PodandriellaSzlach.
    • Pseudocoeloglossum(Szlach. & Olszewski) Szlach.
    • PseudohemipiliaSzlach.
    • Pseudoperistylus(P.F.Hunt) Szlach. & Olszewski
    • RenzorchisSzlach. & Olszewski
    • RhinorchisSzlach.
    • SchlechterorchisSzlach.
    • SenghasiellaSzlach.
    • SmithantheSzlach. & Marg.
    • SynmeriaNimmo
    • TrachypetalumSzlach. & Sawicka

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]

Contents

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 Habenaria roxburghii syn H platyphylla in Talakona forest, AP W IMG 8591.jpg
Habenaria roxburghii flowers in Talakona, India

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]

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<i>Habenaria chlorosepala</i> Species of orchid

Habenaria chlorosepala, commonly known as the green-hooded rein orchid, is a species of orchid that is endemic to a small area in far north Queensland. It has two or three leaves at its base and up to twenty small green and white flowers.

<i>Habenaria exilis</i> Species of orchid

Habenaria exilis, commonly known as the wispy rein orchid, is a species of orchid that is endemic to a small area in far north Queensland. It usually has two leaves at its base and up to fifteen tiny whitish flowers.

Habenaria ferdinandi, commonly known as the yellow rein orchid, is a species of orchid that is endemic to the Northern Territory. It usually has two leaves at its base and up to fifteen tiny yellowish green, strongly scented flowers.

Habenaria harroldii, commonly known as the southern rein orchid, is a species of orchid that is endemic to the Fraser Coast region of Queensland. It has up to five leaves at its base and up to twenty five white flowers with reduced side lobes on the labellum.

Habenaria hymenophylla, commonly known as the coastal rein orchid, is a species of orchid that is endemic to northern Australia. It up to eight leaves scattered along the stem and up to thirty smelly green and white flowers.

<i>Habenaria rumphii</i> Species of orchid

Habenaria rumphii, commonly known as the stiff rein orchid, is a species of orchid that is widespread and common in Southeast Asia, New Guinea and northern Australia. It has six or seven leaves on the lower part of its stem and up to thirty white flowers with one long and two short lobes on the labellum.

Habenaria macraithii, commonly known as the whiskered rein orchid, is a species of orchid that is endemic to a small area in far north Queensland. It has up to eleven scattered leaves and up to twenty five relatively large green flowers with thread-like petal lobes.

Habenaria triplonema, commonly known as the twisted rein orchid, is a species of orchid that is endemic to northern Australia. It two or three leaves at its base and up to twenty five yellowish, strongly scented flowers.

<i>Habenaria xanthantha</i> Species of orchid

Habenaria xanthantha, commonly known as the freak rein orchid, is a species of orchid that is endemic to far northern Queensland. It has two or three leaves at its base, and up to twenty small white flowers often lacking the nectary spur present on other species in the genus.

References

  1. 1 2 3 "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. 1 2 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. 1 2 "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.