Biology:Pterostylis pedoglossa
| Prawn greenhood | |
|---|---|
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| Pterostylis pedoglossa growing in Beowa National Park | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Orchidaceae |
| Subfamily: | Orchidoideae |
| Tribe: | Cranichideae |
| Genus: | Pterostylis |
| Species: | P. pedoglossa
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| Binomial name | |
| Pterostylis pedoglossa Fitzg.[1]
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| Synonyms[1] | |
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Pterostylis pedoglossa, commonly known as the prawn greenhood, is a species of orchid endemic to south-eastern Australia . There is a rosette of leaves at the base and flowering plants have a single white flower with green stripes, sometimes with a brownish tinge on the tip, and a long, thread-like labellum.
Description
Pterostylis pedoglossa is a terrestrial, perennial, deciduous, herb with an underground tuber and a rosette of egg-shaped, greyish-green leaves, each leaf 5–25 mm long and 4–20 mm wide. Flowering plants have a single flower 15–20 mm long and 5–6 mm wide borne on a spike 60–150 mm high. The flowers are white with green stripes, sometimes brown near the tip. The dorsal sepal and petals are fused, forming a hood or "galea" over the column, the galea flat or slightly turned downwards on the tip. The dorsal sepal has a thread-like tip 10–25 mm long. The lateral sepals are held closely against the galea, have an erect, thread-like tip 15–30 mm long and a V-shaped sinus between their bases. The labellum is about 4 mm long, 2 mm wide, greenish, thick, straight and not visible from outside the flower. Flowering occurs from March to June.[2][3][4]
Taxonomy and naming
Pterostylis pedoglossa was first formally described in 1877 by Robert D. FitzGerald from a specimen collected near Long Bay. The description was published in Fitzgerald's book, Australian Orchids[1]
Distribution and habitat
The prawn greenhood grows in coastal and near-coastal heath between Sydney and Melbourne and in Tasmania.[2][3][4][5]
References
- ↑ 1.0 1.1 1.2 "Pterostylis pedoglossa". APNI. https://id.biodiversity.org.au/instance/apni/488180. Retrieved 23 May 2017.
- ↑ 2.0 2.1 Jones, David L. (2006). A complete guide to native orchids of Australia including the island territories. Frenchs Forest, N.S.W.: New Holland. p. 287. ISBN 978-1877069123.
- ↑ 3.0 3.1 Jones, David L.. "Pterostylis pedoglossa". Royal Botanic Garden Sydney: plantnet. http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Pterostylis~pedoglossa. Retrieved 23 May 2017.
- ↑ 4.0 4.1 Jeanes, Jeff. "Pterostylis pedoglossa". Royal Botanic Gardens Victoria: vicflora. https://vicflora.rbg.vic.gov.au/flora/taxon/4da7b12e-6e6d-457d-8397-39a5dfbd4079. Retrieved 23 May 2017.
- ↑ Jones, David L. (1998). "Contributions to Tasmanian Orchidology". Australian Orchid Research 3: 148.
Wikidata ☰ Q15491999 entry
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