Prasophyllum petilum
| Tarengo leek orchid | |
|---|---|
| File:Prasophyllum petilum.jpg | |
| Prasophyllum petilum growing in the Australian Capital Territory | |
Scientific classification  |
|
| Kingdom: | Plantae |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Orchidaceae |
| Subfamily: | Orchidoideae |
| Tribe: | Diurideae |
| Subtribe: | Prasophyllinae |
| Genus: | Prasophyllum |
| Species: |
P. petilum
|
| Binomial name | |
| Prasophyllum petilum |
|
Prasophyllum petilum, commonly known as the Tarengo leek orchid, is a species of orchid endemic to eastern Australia. It has a single tubular, green leaf and up to eighteen pinkish mauve to greenish flowers, well-spaced along a slender flowering stem. It is a small orchid, difficult to locate, generally growing in taller grasses.
Contents
Description
Prasophyllum petilum is a terrestrial, perennial, deciduous, herb with an underground tuber and a single tube-shaped, dark green leaf with a purplish base and is Lua error in Module:Convert at line 1851: attempt to index local 'en_value' (a nil value). long and Lua error in Module:Convert at line 1851: attempt to index local 'en_value' (a nil value). wide. Between five and eighteen, sometimes fragrant flowers are crowded along a flowering spike about Lua error in Module:Convert at line 1851: attempt to index local 'en_value' (a nil value). long. The flowers are pinkish mauve to greenish and Lua error in Module:Convert at line 1851: attempt to index local 'en_value' (a nil value). wide. As with others in the genus, the flowers are inverted so that the labellum is above the column rather than below it. The dorsal sepal is a narrow egg-shape to lance-shape, Lua error in Module:Convert at line 1851: attempt to index local 'en_value' (a nil value). long and about Lua error in Module:Convert at line 1851: attempt to index local 'en_value' (a nil value). wide. The lateral sepals are about the same length as the dorsal sepal but narrower and joined to each other for about half their length. The petals are linear to lance-shaped and about Lua error in Module:Convert at line 1851: attempt to index local 'en_value' (a nil value). long. The labellum is linear to egg-shaped, Lua error in Module:Convert at line 1851: attempt to index local 'en_value' (a nil value). long, turns upwards and has slightly wavy edges. There is a fleshy, yellowish-green callus in the centre of the labelum. Flowering occurs in late October and November.[2][3]
Taxonomy and naming
Prasophyllum petilum was first formally described in 1991 by David Jones and Robert Bates from a specimen collected at Hall in the Australian Capital Territory and the description was published in Australian Orchid Research.[1][3] The specific epithet (petilum) is a Latin word meaning "slender" or "thin",[4] referring the habit of this species.[3]
Distribution and habitat
The Tarengo leek orchid grows in grassland and grassy woodland, often growing in colonies when not subject to grazing. It has been recorded at Hall, Boorowa, Ilford, Delegate, near Queanbeyan and Muswellbrook.[5]
Conservation
Prasophyllum petilum is classified as Endangered under the New South Wales Threatened Species Conservation Act and the Commonwealth Government Environment Protection and Biodiversity Conservation Act 1999 (EPBC) Act.[5][6]
References
- ↑ 1.0 1.1 Lua error in package.lua at line 80: module 'strict' not found.
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External links
Media related to Prasophyllum petilum at Wikimedia Commons
Data related to Prasophyllum petilum at Wikispecies
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