Caladenia bicalliata subsp. cleistogama

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 .

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

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.[1][2]

Taxonomy and naming

Caladenia bicalliata was first formally described by Richard Rogers in 1909.[3] In 2001 Stephen Hopper and Andrew Brown described two subspecies, including subspecies cleistogama and the description of the two subspecies was published in Nuytsia.[4] The specific epithet (cleistogama) is from the Latin cleistogamus (fertilised within the unopened flower), referring to the self-pollinating habit of this subspecies.[1]

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.[5][6]

Conservation

Caladenia bicalliata subsp. cleistogama is classified as "not threatened" by the Western Australian Government Department of Parks and Wildlife.[5]

gollark: A link-local one.
gollark: As I said, it should be a multicast address.
gollark: It's on my laptop, which isn't currently on WiFi or anything, so yes.
gollark: ```rust let multicast_addr: Ipv6Addr = "ff02::aeae".parse().unwrap(); let socket = Socket::new(Domain::ipv6(), Type::dgram(), Some(Protocol::udp()))?; socket.set_only_v6(true)?; socket.set_multicast_loop_v6(false)?; socket.join_multicast_v6(&multicast_addr, 0).with_context(|| "join multicast failed")?; socket.bind(&SocketAddr::from((Ipv6Addr::UNSPECIFIED, PORT)).into())?;```
gollark: It's likely that my code is just setting up the socket wrong somehow, since I mostly just used the multicast-looking things in the docs and rearranged the calls until it stopped saying stupid things like "OS error 22".

References
  1. 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.
  2. Hoffman, Noel; Brown, Andrew (2011). Orchids of South-West Australia (3rd ed.). Gooseberry Hill: Noel Hoffman. p. 27. ISBN 9780646562322.
  3. "Caladenia bicalliata". APNI. Retrieved 13 October 2016.
  4. "Caladenia bicalliata subsp. cleistogama". APNI. Retrieved 13 October 2016.
  5. "Caladenia bicalliata subsp. cleistogama". FloraBase. Western Australian Government Department of Parks and Wildlife.
  6. Paczkowska, Grazyna; Chapman, Alex R. (2000). The Western Australian flora : a descriptive catalogue. Perth: Wildflower Society of Western Australia. p. 76. ISBN 0646402439.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.