Prasophyllum cyphochilum

Prasophyllum cyphochilum, commonly known as the pouched leek orchid, is a species of orchid endemic to the south-west of Western Australia. It is a relatively common orchid with a single smooth, tubular leaf and up to thirty or more pale yellow and brown flowers. The flowers do not open fully, are more or less cup-shaped and have a "humped" labellum.

Pouched 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. cyphochilum
Binomial name
Prasophyllum cyphochilum

Description

Prasophyllum cyphochilum is a terrestrial, perennial, deciduous, herb with an underground tuber and a single smooth, tube-shaped leaf 60–250 mm (2–10 in) long and about 2 mm (0.08 in) in diameter. Between fifteen and thirty or more flowers are arranged on a flowering spike 150–450 mm (6–20 in) tall. The flowers are pale yellow and brown, about 8 mm (0.3 in) long and 7 mm (0.3 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, lateral sepals and petals are small and forwards-facing, so that the flower is cup-shaped and does not fully open. The labellum is also small, turns upwards towards the lateral sepals and has a humped or pouched base. Flowering occurs from September to October.[2][3]

Taxonomy and naming

Prasophyllum cyphochilum was first formally described in 1873 by George Bentham and the description was published in Flora Australiensis.[1][4] The specific epithet (cyphochilum) is derived from the Ancient Greek words kyphos meaning "bent" or "humped"[5]:249 and cheilos meaning "lip"[5]:200 referring to the humped base of the labellum.[3]

Distribution and habitat

The pouched leek orchid grows amongst shrubs in places that are wet in winter. It occurs from Kalbarri in the north to Israelite Bay in the east.[3][2][6]

Conservation

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

References
  1. "Prasophyllum cyphochilum". APNI. Retrieved 10 November 2017.
  2. Hoffman, Noel; Brown, Andrew (2011). Orchids of South-West Australia (3rd ed.). Gooseberry Hill: Noel Hoffman. p. 361. ISBN 9780646562322.
  3. Brown, Andrew; Dundas, Pat; Dixon, Kingsley; Hopper, Stephen (2008). Orchids of Western Australia. Crawley, Western Australia: University of Western Australia Press. p. 328. ISBN 9780980296457.
  4. Bentham, George (1873). Flora Australiensis (Volume 6). London: Lovell Reeve & Co. pp. 340–341. Retrieved 10 November 2017.
  5. Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press.
  6. "Prasophyllum cyphochilum". FloraBase. Western Australian Government Department of Parks and Wildlife.
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