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Caladenia exilis

From Wikipedia, the free encyclopedia

Caladenia exilis
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Orchidoideae
Tribe: Diurideae
Genus: Caladenia
Species:
C. exilis
Binomial name
Caladenia exilis
Synonyms[1]
  • Caladenia exilis Paczk. & A.R.Chapm. nom. inval.
  • Calonema exile (Hopper & A.P.Br.) D.L.Jones & M.A.Clem.
  • Calonema exilis D.L.Jones & M.A.Clem. orth. var.
  • Calonemorchis exilis (Hopper & A.P.Br.) D.L.Jones & M.A.Clem.
  • Jonesiopsis exilis (Hopper & A.P.Br.) D.L.Jones & M.A.Clem.

Caladenia exilis is a species of flowering plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. It is a ground orchid with a single erect, linear leaf and up to three white to greenish-cream or dark pinkish-maroon flowers.

Description

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Caladenia exilis is a terrestrial, perennial, deciduous, sympodial herb with a single, erect, linear leaf 40–100 mm (1.6–3.9 in) long and 4–7 mm (0.16–0.28 in) wide. The plant is 60–250 mm (2.4–9.8 in) high with up to three white to greenish-cream or dark pinkish maroon flowers, with two rows of red to cream-coloured calli along the mid-line of the labellum. The flowers are 60–150 mm (2.4–5.9 in) long and 40–60 mm (1.6–2.4 in) wide.[2][3][4]

Taxonomy and naming

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Caladenia exilis was first formally described in 2001 by Stephen Hopper and Andrew Phillip Brown in the journal Nuytsia from specimens collected near Nyabing by Robert Bates in 1990.[5] The specific epithet (exilis) means "slender", "alluding to the slender labellum, petals and sepals".[4]

In the same journal Hopper and Andrew Brown described two subspecies of C. exilis, and the names are accepted by the Australian Plant Census:

Distribution and habitat

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Subspecies exilis grows near salt lakes between Mullewa and Woodanilling in the Avon Wheatbelt, Jarrah Forest and Mallee bioregions.[4][8] Subspecies vanleeuwenii grows in winter-wet depressions in salmon gum and york gum woodland, or on granite outcrops, north and south of Moora in the Avon Wheatbelt and Jarrah Forest bioregions of south-western Western Australia.[4][9]

References

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  1. ^ a b "Caladenia exilis". Australian Plant Census. Retrieved 6 February 2023.
  2. ^ a b c Brown, Andrew P.; Dixon, Kingsley W.; French, Christopher; Brockman, Garry (2013). Field guide to the orchids of Western Australia : the definitive guide to the native orchids of Western Australia. Floreat, W.A.: Simon Neville Publications. p. 60. ISBN 9780980348149.
  3. ^ a b c Hoffman, Noel; Brown, Andrew (2011). Orchids of South-West Australia (3rd ed.). Gooseberry Hill: Noel Hoffman. pp. 35–36. ISBN 9780646562322.
  4. ^ a b c d e f Brown, Andrew P.; Hopper, Stephen (2001). "Contributions to Western Australian orchidology: 2. New taxa and circumscriptions in Caladenia". Nuytsia. 14 (1/2): 227–231. Retrieved 6 February 2023.
  5. ^ "Caladenia exilis". APNI. Retrieved 7 February 2023.
  6. ^ "Caladenia exilis subsp. exilis". Australian Plant Census. Retrieved 6 February 2023.
  7. ^ "Caladenia exilis subsp. vanleeuwenii". Australian Plant Census. Retrieved 6 February 2023.
  8. ^ "Caladenia exilis subsp. exilis". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
  9. ^ "Caladenia exilis subsp. vanleeuwenii". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.