Английская Википедия:Diuris amplissima
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Diuris amplissima, commonly known as giant donkey orchid,[1] is a species of orchid that is endemic to the south-west of Western Australia. It is a rare species and the largest Diuris in Western Australia. It has two or three leaves at its base and up to seven purple and dull yellowish-brown flowers on a tall flowering stem.
Description
Diuris amplissima is a tuberous, perennial herb, usually growing to a height of Шаблон:Convert with two or three leaves emerging at the base, each leaf Шаблон:Convert long and Шаблон:Convert wide. There are between three and seven purple and dull yellowish-brown flowers Шаблон:Convert long and Шаблон:Convert wide. The dorsal sepal is erect, Шаблон:Convert long and Шаблон:Convert wide and oval to kidney-shaped (wider than long). The lateral sepals are linear to sword-shaped, green with purplish marks, Шаблон:Convert long, Шаблон:Convert wide, turned downwards and usually parallel to each other. The petals are more or less erect with an elliptic to oval blade Шаблон:Convert long and Шаблон:Convert wide on a purplish-brown stalk Шаблон:Convert long. The labellum is Шаблон:Convert long and has three lobes. The centre lobe is wedge-shaped, Шаблон:Convert long, Шаблон:Convert wide and the side lobes are asymmetric egg-shaped, Шаблон:Convert long and Шаблон:Convert wide with wavy or crinkled edges. There is a ridge-like callus Шаблон:Convert in the mid-line of the base of the labellum. Flowering occurs from September to November.[1][2][3][4]
Taxonomy and naming
Diuris amplissima was first formally described in 1991 by David Jones from a specimen collected near Moodiarrup, and the description was published in Australian Orchid Review.[2][5] The specific epithet (amplissima) is a Latin word meaning "largest",[6] referring to the "impressive flowers".[2]
Distribution and habitat
Giant donkey orchid grows in woodland and forest between Porongurup and Capel in the Avon Wheatbelt, Jarrah Forest and Mallee biogeographic regions. It is a rare species, similar to D. magnifica but grows in heavier soils than the sandy habitat of that species.[1][4][7]
Conservation
Diuris amplissima is classified as "not threatened" by the Western Australian Government Department of Parks and Wildlife.[7]
References
- Английская Википедия
- Diuris
- Endemic orchids of Australia
- Orchids of Western Australia
- Endemic flora of Western Australia
- Plants described in 1991
- Taxa named by David L. Jones (botanist)
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