Pterostylis erecta
Upright maroonhood | |
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Pterostylis erecta growing near Newcastle | |
Scientific classification | |
Kingdom: | Plantae |
(unranked): | Angiosperms |
(unranked): | Monocots |
Order: | Asparagales |
Family: | Orchidaceae |
Subfamily: | Orchidoideae |
Tribe: | Diurideae |
Subtribe: | Pterostylidinae |
Genus: | Pterostylis |
Species: | P. erecta |
Binomial name | |
Pterostylis erecta Trevor Edgar Hunt[1] | |
Pterostylis erecta, commonly known as the upright maroonhood, is a species of orchid endemic to eastern Australia. Flowering plants have a rosette of four to seven stalked, dark green, crinkled leaves and a greenish to reddish-brown flower with a gap between the petals and lateral sepals. It occurs in New South Wales and south-eastern Queensland.
Description
Pterostylis erecta is a terrestrial, perennial, deciduous, herb with an underground tuber. Flowering plants have a rosette of between four and seven stalked, dark green, crinkled leaves, each leaf 15-50 mm long and 10-25 mm wide. A single flower 18-22 mm long and 5-7 mm wide is borne on a spike 150-350 mm high. The flowers are greenish to reddish brown or dark chocolate brown. The dorsal sepal and petals are fused, forming a hood or "galea" over the column but the dorsal sepal is longer than the petals and has a sharp point on its end. There is a wide gap between the petals and the lateral sepals and the sinus between the lateral sepals has a central notch and bulges slightly forward. The labellum is 6-7 mm long, about 2 mm wide, brown, blunt and just visible above the sinus. Flowering occurs from August to September.[2][3]
Taxonomy and naming
Pterostylis erecta was first formally described in 1958 by Trevor Edgar Hunt from a specimen collected near Samford in Queensland. The description was published in Proceedings of the Royal Society of Queensland.[1] The specific epithet (erecta) is a Latin word meaning "upright".[4]
Distribution and habitat
The upright maroonhood grows mainly in coastal and near coastal forest north from Moruya in New South Wales to south-eastern Queensland.[2][3]
References
- 1 2 "Pterostylis erecta". APNI. Retrieved 15 May 2017.
- 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. 302. ISBN 1877069124.
- 1 2 Jones, David L. "Pterostylis erecta". Royal Botanic Garden Sydney: plantnet. Retrieved 15 May 2017.
- ↑ Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 307.
External links
- Media related to Pterostylis erecta at Wikimedia Commons
- Data related to Pterostylis erecta at Wikispecies