Английская Википедия:Caladenia bryceana subsp. cracens
Шаблон:Short description Шаблон:Infraspeciesbox
Caladenia bryceana subsp. cracens, commonly known as the northern dwarf spider orchid, is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. It has a single spreading, hairy leaf and a single green to apricot-coloured flower. It is a small orchid and difficult to find, even when quite abundant in a particular location. It has a more northerly distribution than subspecies bryceana which grows closer to Albany.
Description
Caladenia bryceana subsp. cracens is a terrestrial, perennial, deciduous, herb with an underground tuber and a single erect, hairy leaf Шаблон:Convert long and about Шаблон:Convert wide. The single flower is borne on a stem Шаблон:Convert high and is Шаблон:Convert long and Шаблон:Convert wide. The lateral sepals and petals are short and spreading. The labellum is green to apricot-coloured, has a red tip and smooth edges. There is a band of calli along the centre of the labellum. It is distinguished from subspecies bryceana by its smaller calli and by its lateral sepals which have their edges rolled under. Flowering occurs between August and early September and is followed by a non-fleshy, dehiscent capsule containing a large number of seeds.[1][2][3]
Taxonomy and naming
Caladenia bryceana was first formally described by Richard Rogers in 1914[4] but in 2001 Stephen Hopper and Andrew Brown described two subspecies, including subspecies cracens and the description of the two subspecies was published in Nuytsia.[5]
Distribution and habitat
Northern dwarf spider orchid occurs between Northampton and Nerren Nerren Station in the Geraldton Sandplains biogeographic region where it grows in heathland and woodland, often under thickets of Melaleuca uncinata.[1][2][6][7]
Conservation
Caladenia bryceana subsp. cracens is classified as "endangered" under the Environment Protection and Biodiversity Conservation Act 1999 and as "rare flora" under the Western Australian Wildlife Conservation Act 1950.[6][8]
References
- Английская Википедия
- Caladenia
- Endemic orchids of Australia
- Orchids of Western Australia
- Plants described in 2001
- Taxa named by Stephen Hopper
- Taxa named by Andrew Phillip Brown
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