Английская Википедия:Diuris palustris

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Diuris palustris, commonly known as the swamp doubletail[1] or swamp diuris[2] is a species of orchid which is endemic to south-eastern Australia. It has a tuft of between eight and ten twisted leaves and up to four yellow flowers with brown spots and blotches marks and blotches.

Description

Diuris palustris is a tuberous, perennial herb with a tuft of between eight and ten twisted, linear leaves Шаблон:Convert long, Шаблон:Convert wide and folded lengthwise. Up to four flowers Шаблон:Convert wide are borne on a flowering stem Шаблон:Convert tall. The flowers are yellow with dark brown spots and blotches. The dorsal sepal is erect, curved backwards near the tip, egg-shaped, Шаблон:Convert long and Шаблон:Convert wide. The lateral sepals are green, Шаблон:Convert long, about Шаблон:Convert wide, turned downwards and parallel to each other. The petals are erect to curved backwards, with an egg-shaped blade Шаблон:Convert long and Шаблон:Convert wide on a dark reddish brown stalk Шаблон:Convert long. The labellum is Шаблон:Convert long and has three lobes. The centre lobe is spatula-shaped, Шаблон:Convert wide and the side lobes are erect, oval, Шаблон:Convert long and Шаблон:Convert wide with rounded teeth near the tip. There are two ridged calli Шаблон:Convert long in the mid-line of the labellum. Flowering occurs from August to October.[1][2][3]

Taxonomy and naming

Diuris palustris was first formally described in 1840 by John Lindley and the description was published in his book, The Genera and Species of Orchidaceous Plants.[4][5] The specific epithet (palustris) is a Latin word meaning "marshy" or "boggy".[6]

Distribution and habitat

The swamp doubletail is found in New South Wales, Victoria, Tasmania and South Australia where it is most common. It grows in moist or wet soil in forest, Callitris woodland and grassland.[1][2][3]

Conservation

Diuris palustris is classed as "vulnerable" under the Victorian Flora and Fauna Guarantee Act 1988 and as "endangered" under the Tasmanian Threatened Species Protection Act 1995.[2][7]

References

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