Английская Википедия:Diuris brumalis
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Diuris brumalis, commonly known as the winter donkey orchid,[1] is a species of orchid that is endemic to the south-west of Western Australia. It is one of the first species of donkey orchid to flower in Western Australia each year and its flowers have been shown to attract the same insects that pollinate other species, but without offering a food reward.
Description
Diuris brumalis is a tuberous, perennial herb, usually growing to a height of Шаблон:Convert. Two or three leaves emerge at the base of the flowering stem, each leaf Шаблон:Convert long and Шаблон:Convert wide. Between three and fifteen yellow and brown flowers are borne on the flowering stem and each is Шаблон:Convert long and Шаблон:Convert wide. The dorsal sepal is erect, Шаблон:Convert long and Шаблон:Convert wide and the greenish lateral sepals are Шаблон:Convert long, about Шаблон:Convert wide and turn downwards. The ear-like petals are erect with a stalk Шаблон:Convert long and a blade Шаблон:Convert long and Шаблон:Convert wide. The labellum has three lobes, the lateral ones Шаблон:Convert long and Шаблон:Convert wide. The middle lobe is wedge-shaped, Шаблон:Convert long and Шаблон:Convert wide. There is a single yellow ridge Шаблон:Convert in the mid-line of the labellum. Flowering occurs from June to August.[1][2][3]
Taxonomy and naming
Diuris brumalis was first described in 1991 by David Jones from a specimen collected near Kalamunda and the description was published in Australian Orchid Research.[4] The specific epithet (brumalis) is a Latin word meaning "of the shortest day",[5] referring to the winter flowering of this species.[6]
Distribution and habitat
The winter donkey orchid grows in shrubland and forest between Jurien Bay and Collie in the Avon Wheatbelt, Jarrah Forest and Swan Coastal Plain biogeographical regions of Western Australia.[1][7]
Ecology
The flowers of this orchid resemble those of some Oxylobium and Daviesia species and are visited by the same native bees that pollinate them, even though the orchid does not reward the insects with nectar or pollen.[3]
Conservation
Diuris brumalis is classified as "not threatened" by the Western Australian Government Department of Parks and Wildlife.[7]
References
- Английская Википедия
- Diuris
- Endemic orchids of Australia
- Orchids of Western Australia
- Endemic flora of Western Australia
- Plants described in 1991
- Taxa named by David L. Jones (botanist)
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