Prasophyllum drummondii

Prasophyllum drummondii, commonly known as the swamp leek orchid, is a species of orchid endemic to the south-west of Western Australia. It is a late-flowering species with a single tubular leaf and up to thirty brownish-orange or pale yellow flowers and often grows in standing water.

Swamp leek orchid
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Orchidoideae
Tribe: Diurideae
Subtribe: Prasophyllinae
Genus: Prasophyllum
Species:
P. drummondii
Binomial name
Prasophyllum drummondii
Synonyms[1]

Prasophyllum ellipticum R.Br.[2]

Description

Prasophyllum drummondii is a terrestrial, perennial, deciduous, herb with an underground tuber and which often grows in clumps. It has a single smooth, tube-shaped leaf 250–700 mm (10–30 in) long and 4–8 mm (0.2–0.3 in) in diameter near the base. Between ten and thirty or more flowers are arranged on a flowering spike 300–800 mm (10–30 in) high. The flowers are brownish-orange, sometimes yellow, 12–14 mm (0.5–0.6 in) long and about 10 mm (0.4 in) wide. As with others in the genus, the flowers are inverted so that the labellum is above the column rather than below it. The dorsal sepal curves downwards, the petals face forwards and the lateral sepals are erect and joined to each other by their sides. The labellum is broad, turns sharply upwards and has a wavy edge. Flowering occurs from October to December.[3][4]

Taxonomy and naming

Prasophyllum drummondii was first formally described in 1871 by Heinrich Gustav Reichenbach and the description was published in Beitrage zur Systematischen Pflanzenkunde.[1][5] The specific epithet (drummondii) honours the naturalist James Drummond who collected the type specimen near the Swan River in 1801.[4]

Distribution and habitat

The swamp leek orchid grows in wet places, including swamps which still contain free water in early summer. It occurs between Three Springs and Israelite Bay.[3][4][6]

Conservation

Prasophyllum drummondii is classified as "not threatened" by the Western Australian Government Department of Parks and Wildlife.[6]

References
  1. "Prasophyllum drummondii". APNI. Retrieved 13 November 2017.
  2. "Prasophyllum brownii". World Checklist of Selected Plant Families (WCSP). Royal Botanic Gardens, Kew.
  3. Hoffman, Noel; Brown, Andrew (2011). Orchids of South-West Australia (3rd ed.). Gooseberry Hill: Noel Hoffman. p. 377. ISBN 9780646562322.
  4. Brown, Andrew; Dundas, Pat; Dixon, Kingsley; Hopper, Stephen (2008). Orchids of Western Australia. Crawley, Western Australia: University of Western Australia Press. p. 332. ISBN 9780980296457.
  5. Reichenbach, Heinrich G. (1871). Beitrage zur Systematischen Pflanzenkunde. Hamburg: Th. G. Meissner. pp. 60–61. Retrieved 1 November 2017.
  6. "Prasophyllum drummondii". FloraBase. Western Australian Government Department of Parks and Wildlife.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.