Английская Википедия:Caladenia pluvialis
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Caladenia pluvialis, commonly known as the Yuna spider orchid, is a species of orchid endemic to the south-west of Western Australia. It is a common spider orchid, especially after winter rains, occurring in a restricted area. It has a single hairy leaf and one or two creamy-coloured flowers. It was formerly included with Caladenia incensa.
Description
Caladenia pluvialis is a terrestrial, perennial, deciduous, herb with an underground tuber and which sometimes forms small clumps. It has a single erect leaf, Шаблон:Convert long, Шаблон:Convert wide and pale green. One or two dull cream to creamy-yellow flowers Шаблон:Convert across are borne on a stalk Шаблон:Convert high. The sepals and petals are linear to lance-shaped near their base then narrow to a reddish-black, thread-like glandular tip. The dorsal sepal is erect to slightly curved forward, Шаблон:Convert long and about Шаблон:Convert wide. The lateral sepals are Шаблон:Convert long and Шаблон:Convert wide and spread horizontally near the base, then curve downwards. The petals are Шаблон:Convert long and Шаблон:Convert wide and arranged like the lateral sepals. The labellum is Шаблон:Convert long and Шаблон:Convert wide and cream coloured with red lines and spots. The sides of the labellum have short, broad, forward-facing serrations, its tip is curled under and there are two rows of anvil-shaped calli up to Шаблон:Convert long, along its centre. Flowering occurs from August to early September and is encouraged by good winter rainfall.[1][2][3]
Taxonomy and naming
Caladenia pluvialis was first described in 2015 by Andrew Phillip Brown and Garry Brockman from a specimen collected near Mullewa and the description was published in Nuytsia.[4] The specific epithet (pluvialis) is a Latin word meaning "of rain"[5] referring to the importance of rain to the flowering of this species, which otherwise grows in a low-rainfall area.[1]
Distribution and habitat
The Yuna spider orchid occurs near Yuna and Mullewa in the Avon Wheatbelt and Geraldton Sandplains biogeographic regions.[1][2][3][6]
Conservation
Caladenia pluvialis is classified as "Priority Two" by the Western Australian Government Department of Parks and Wildlife,[6] meaning that it is poorly known and known from only one or a few locations.[7]
References
- Английская Википедия
- Caladenia
- Orchids of Western Australia
- Endemic orchids of Australia
- Plants described in 2015
- Endemic flora of Western Australia
- Taxa named by Andrew Phillip Brown
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