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| ==Taxonomy and naming== | ==Taxonomy and naming== | ||
| '']'' was first formally described by ] in 1909.<ref name=APNI(1)>{{cite web|title=''Caladenia bicalliata''|url= https://id.biodiversity.org.au/instance/apni/512407|publisher=APNI|accessdate=13 October 2016}}</ref> In 2001 ] and ] described two subspecies, including subspecies ''cleistogama'' and the description of the two subspecies was published in '']''.<ref name=APNI>{{cite web|title=''Caladenia bicalliata'' subsp. ''cleistogama''|url= https://id.biodiversity.org.au/instance/apni/574352|publisher=APNI|accessdate=13 October 2016}}</ref> The subspecies epithet ("cleistogamous") |
'']'' was first formally described by ] in 1909.<ref name=APNI(1)>{{cite web|title=''Caladenia bicalliata''|url= https://id.biodiversity.org.au/instance/apni/512407|publisher=APNI|accessdate=13 October 2016}}</ref> In 2001 ] and ] described two subspecies, including subspecies ''cleistogama'' and the description of the two subspecies was published in '']''.<ref name=APNI>{{cite web|title=''Caladenia bicalliata'' subsp. ''cleistogama''|url= https://id.biodiversity.org.au/instance/apni/574352|publisher=APNI|accessdate=13 October 2016}}</ref> The subspecies epithet ("cleistogamous") refers to the fact that the flowers rarely open.<ref name="APB" /> | ||
| ==Distribution and habitat== | ==Distribution and habitat== | ||
Revision as of 08:41, 21 July 2019
| Shy limestone spider orchid | |
|---|---|
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Orchidaceae |
| Subfamily: | Orchidoideae |
| Tribe: | Diurideae |
| Genus: | Caladenia |
| Species: | C. bicalliata |
| Subspecies: | C. b. subsp. cleistogama |
| Trinomial name | |
| Caladenia bicalliata subsp. cleistogama Hopper & A.P.Br. | |
Caladenia bicalliata subsp. cleistogama, commonly known as the shy limestone spider orchid or sandhill spider orchid, is a plant in the orchid family Orchidaceae and is native to the south-west of Western Australia. It has a single erect, hairy leaf and one or two cream-coloured flowers which are smaller than those in subspecies bacalliata .
Description
Caladenia bicalliata subsp. cleistogama is a terrestrial, perennial, deciduous, herb with an underground tuber and which occurs singly or in small clumps. It has a single erect, very hairy, linear to lance-shaped leaf, 10–20 cm (4–8 in) long and 2–5 mm (0.08–0.2 in) wide. The inflorescence is a raceme, 10–20 cm (4–8 in) high with one or two flowers, each flower about 25 mm (1 in) long and 10 mm (0.4 in) wide. The dorsal sepal abruptly narrows about one-third of its length from the base. The lateral sepals and petals are much shorter than those of subspecies bicalliata, lack reddish-brown tips and are a paler greenish-cream colour. The labellum is white with red spots and a serrated edge and has two rows of white-tipped calli along its centre. Flowering occurs from August to early September, however the flowers only rarely open fully.
Taxonomy and naming
Caladenia bicalliata was first formally described by Richard Rogers in 1909. In 2001 Stephen Hopper and Andrew Brown described two subspecies, including subspecies cleistogama and the description of the two subspecies was published in Nuytsia. The subspecies epithet ("cleistogamous") refers to the fact that the flowers rarely open.
Distribution and habitat
Shy limestone spider orchid occurs in a narrow coastal strip, growing on consolidated sand dunes between William Bay National Park and Cape Arid National Park in the Esperance Plains and Warren biogeographic regions.
Conservation
Caladenia bicalliata subsp. cleistogama is classified as "not threatened" by the Western Australian Government Department of Parks and Wildlife.
References
- ^ Brown, Andrew; Dixon, Kingsley; French, Christopher; Brockman, Garry (2013). Field guide to the orchids of Western Australia : the definitive guide to the native orchids of Western Australia. Simon Nevill Publications. p. 53. ISBN 9780980348149.
- Hoffman, Noel; Brown, Andrew (2011). Orchids of South-West Australia (3rd ed.). Gooseberry Hill: Noel Hoffman. p. 27. ISBN 9780646562322.
- "Caladenia bicalliata". APNI. Retrieved 13 October 2016.
- "Caladenia bicalliata subsp. cleistogama". APNI. Retrieved 13 October 2016.
- ^ "Caladenia bicalliata subsp. cleistogama". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
- Paczkowska, Grazyna; Chapman, Alex R. (2000). The Western Australian flora : a descriptive catalogue. Perth: Wildflower Society of Western Australia. p. 76. ISBN 0646402439.
| Taxon identifiers | |
|---|---|
| Caladenia bicalliata subsp. cleistogama | |