Corybas hispidus

Bristly helmet orchid
Corybas hispidus near Ebor
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Orchidoideae
Tribe: Diurideae
Subtribe: Acianthinae
Genus: Corybas
Species: C. hispidus
Binomial name
Corybas hispidus
Synonyms[1]

Corybas hispidus, commonly known as the bristly helmet orchid, is a species of orchid endemic to eastern Australia. It is distinguished from other helmet orchids by its autumn to winter flowering period, and by its labellum which has a bristly-hairy, creamy-white centre and is deeply notched along its top edge.

Description

Corybas hispidus is a terrestrial, perennial, deciduous, herb with an underground tuber. It has a single dark green leaf which is more or less circular in shape, 15–35 mm long and wide and silvery-green or reddish on the lower surface. The single flower is reddish-purple and white with a greenish-grey dorsal sepal with red or dark purple spots. The dorsal sepal is egg-shaped or spoon-shaped, forms a hood over the labellum and is 22–36 mm long and 11–18 mm wide when flattened. The lateral sepals are linear in shape, 5–9 mm long and about 1 mm wide. The petals are about 5mm long and 1 mm wide, linear in shape except for near their base which is wing-shaped. The labellum is tube-shaped, 20–30 mm long and wide and the edges have many linear teeth. The central "boss" of the labellum is dome-shaped and white with a notch at the top and the surface is covered with short, stiff bristles. Flowering is from March to August.[2][3][4]

Taxonomy and naming

Corybas hispidus was first formally described in 1973 by David Jones from a specimen found near the village of Wulgulmerang. The description was published in "The Victorian Naturalist".[1] It was the first of many orchids described by Jones.[5] The specific epithet (hispidus) is a Latin word meaning "bristly", "rough", "hairy" or "prickly".[6]

Distribution and habitat

Bristly helmet orchid occurs in south-east Queensland, on the ranges and tablelands of New South Wales and in sheltered sites in far north-eastern Victoria.[2][3][4][7]

References

  1. 1 2 3 "Corybas hispidus". APNI. Retrieved 27 April 2017.
  2. 1 2 Jones, David L. (2006). A complete guide to native orchids of Australia including the island territories. Frenchs Forest, N.S.W.: New Holland. p. 171. ISBN 1877069124.
  3. 1 2 Jeanes, Jeff. "Corybas hispidus". Royal Botanic Gardens Victoris: vicflora. Retrieved 27 April 2017.
  4. 1 2 Jones, David L. "Corybas hispidus". Royal Botanic Garden Sydney: plantnet. Retrieved 27 April 2017.
  5. ↑ "Jones, David Lloyd (1944 - )". Council of the Heads of Australian Herbaria. Retrieved 27 April 2017.
  6. ↑ Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 391.
  7. ↑ "Corybas hispidus". Atlas of Living Australia. Retrieved 27 April 2017.
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