Pterostylis plumosa
| Pterostylis plumosa | |
|---|---|
 | |
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Monocots |
| Order: | Asparagales |
| Family: | Orchidaceae |
| Subfamily: | Orchidoideae |
| Tribe: | Diurideae |
| Subtribe: | Pterostylidinae |
| Genus: | Pterostylis |
| Species: | P. plumosa |
| Binomial name | |
| Pterostylis plumosa Cady | |
Pterostylis plumosa, commonly known as the bearded greenhood or plumed greenhood is a species of orchid in the family Orchidaceae which is endemic to south-eastern Australia and possibly New Zealand. Its labellum or lip is long and thin, bordered with golden hairs, giving it the name "bearded".
Description
Pterostylis plumosa is a perennial herb rising from round tubers to form small colonies and grows to a height of 12-20&bsp;cm. It has 5-20 fleshy lance-shaped, pale green leaves crowded around the base of the stem and extending upwards, 1-3 cm x 5-15 mm. There is a single flower on each plant, about 3 cm long, erect and translucent with fine dark green lines and reticulations. The labellum is long and thin (about 1.5 mm wide), bearded with golden-yellow hairs and ending in a red-brown knob. The dorsal sepal (at the back of the flower) narrows at the end to a thin point, 4 mm long. The flowers appear from August to November.[1][2][3]
Taxonomy and naming
P. plumosa was first described in 1969 by Leo Cady in "Australian Plants" (published by the Australian Native Plants Society), from a specimen collected "on the road to Abercrombie Caves".[4] The specific epithet (plumosa) is derived the Latin word plumosis, "feathered".[5]
Distribution and habitat
The bearded greenhood occurs in New South Wales, Victoria, South Australia and Tasmania.[2] It is also thought to occur in New Zealand.[6] It is an uncommon species, growing in "heathy woodland [in] semi shade".[1]
References
- ↑ 1.0 1.1 "Pterostylis plumosa". Yarra Ranges Shire Council. Retrieved 26 February 2015.
- ↑ 2.0 2.1 Tindale, Mary D.; Carolin, Roger C, (1994). Flora of the Sydney region (4th ed.). Chatswood, NSW: Reed. p. 683. ISBN 0730104001.
- ↑ Jones, David L. "Pterostylis plumosa". Royal Botanic Gardens, Sydney. Retrieved 27 February 2015.
- ↑ "Pterostylis plumosa Cady". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government.
- ↑ "plumosus". Wiktionary. Retrieved 26 February 2015.
- ↑ Cooper, Dorothy (1981). A Field Guide to New Zealand Native Orchids. Price Milburn. p. 3. Retrieved 27 February 2015.