Английская Википедия:Caladenia richardsiorum

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Caladenia richardsiorum, commonly known as the little dip spider orchid,[1] Richards' spider orchid or robe spider orchid,[2] is a plant in the orchid family Orchidaceae and is endemic to South Australia. It is a ground orchid with a single erect, hairy leaf and usually only one yellowish-green flower. It is similar to the endangered Mellblom's spider orchid (Caladenia hastata) but has a much larger leaf and the petals lack glandular tips.

Description

Caladenia richardsiorum is a terrestrial, perennial, deciduous, herb with an underground tuber and a single, erect, hairy leaf. The leaf is Шаблон:Convert long, Шаблон:Convert wide and has reddish-purple blotches near its base. Usually only a single yellowish-green flower about Шаблон:Convert across is borne on a spike Шаблон:Convert tall. The sepals, but not the petals, have blackish, club-like glandular tips Шаблон:Convert long. The dorsal sepal is erect, Шаблон:Convert long, Шаблон:Convert wide and the lateral sepals are Шаблон:Convert long and Шаблон:Convert wide, spread apart and curve stiffly downwards. The petals are Шаблон:Convert long, Шаблон:Convert wide and curve stiffly downwards. The labellum is Шаблон:Convert long and Шаблон:Convert wide, and greenish cream-coloured. The sides of the labellum turn upwards and have dark red, linear teeth up to Шаблон:Convert long, and the tip curves downwards. There are six rows of reddish calli with cream-coloured tips along the labellum mid-line. Flowering occurs from late September to early November.[2][3][1]

Taxonomy and naming

Caladenia richardsiorum was first formally described in 1991 by David Jones and the description was published in Australian Orchid Research.[4][3] The specific epithet (richardsiorum) honours Helen and Barry Richards for their assistance to Jones.

Distribution and habitat

The little dip spider orchid occurs in coastal areas mainly between Southend and the Coorong growing in heath and woodland.[3][1]

Conservation

Caladenia richardsiorum is classified as "endangered" under the Australian Government Environment Protection and Biodiversity Conservation Act 1999 and the South Australian Government National Parks and Wildlife Act (1972). The main threats to the species include land clearance, weed invasion and grazing by rabbits.[1]

References

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