Английская Википедия:Caladenia bicalliata subsp. bicalliata
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Caladenia bicalliata subsp. bicalliata, commonly known as the limestone spider orchid or dwarf limestone spider orchid, is a plant in the orchid family Orchidaceae and is native to the south-west of Western Australia and coastal areas of South Australia. It has a single erect, hairy leaf and one or two cream-coloured flowers with reddish-brown tips.
Description
Caladenia bicalliata subsp. bicalliata is a terrestrial, perennial, deciduous, herb with an underground tuber and which occurs singly or in small clumps. It has a single erect, very hairy, linear to lance-shaped leaf, Шаблон:Convert long and Шаблон:Convert wide. The inflorescence is a raceme, Шаблон:Convert high with one or two flowers, each flower Шаблон:Convert long and Шаблон:Convert wide. The dorsal sepal is about Шаблон:Convert long and abruptly narrows about one-third of its length from the base. The lateral sepals and petals are cream or greenish-cream, much shorter than those of the similar C. abbreviata and C. evanescens and have reddish-brown tips. The lateral sepals are less than Шаблон:Convert long and thread-like for about half their length and the petals are about the same length and gradually taper to a thread-like tip. The labellum is egg-shaped, about Шаблон:Convert long, Шаблон:Convert wide and white with red stripes. The edge of the labellum is serrated and there are two rows of white-tipped calli along its centre. Flowering occurs from August to early October, however the flowers are often open for only one or two days and sometimes self-pollinate and do not open at all.[1][2][3][4]
Taxonomy and naming
Caladenia bicalliata was first formally described by Richard Rogers in 1909[5] but in 2001 Stephen Hopper and Andrew Brown described two subspecies, including subspecies bicalliata and the description of the two subspecies was published in Nuytsia[6] The specific epithet (bicalliata) is a derived from the Latin bi- meaning "two", callus meaning "a callus" and -atus indicating possession, referring to the two pairs of rows of calli on the labellum.[1][7]
Distribution and habitat
Limestone spider orchid occurs in a narrow coastal strip, growing in calcareous soil between Kalbarri and Esperance in Western Australia and along the south-east coast but sometimes up to Шаблон:Convert inland in South Australia.[1][2][3][8]
Conservation
Caladenia bicalliata subsp. bicalliata is classified as "not threatened" by the Western Australian Government Department of Parks and Wildlife.[9]
References
- Английская Википедия
- Caladenia
- Endemic orchids of Australia
- Orchids of South Australia
- Orchids of Western Australia
- Plants described in 1909
- Taxa named by Stephen Hopper
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