| 词条 | Caladenia × triangularis |
| 释义 |
| name = Shy spider orchid | image = Caladenia x triangularis.jpg | image_caption = Caladenia × triangularis growing in Wandoo National Park | genus = Caladenia | species = {{hybrid}} triangularis | authority = R.S.Rogers[1] | synonyms_ref = | synonyms = }} Caladenia × triangularis, commonly known as the shy spider orchid, is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. It has a single hairy leaf and up to three pale yellow flowers. A natural hybrid between flava and C. longicauda, it is a rare species found between Perth and Esperance. DescriptionCaladenia × triangularis is a terrestrial, perennial, deciduous, herb with an underground tuber and a single hairy leaf, {{convert|50-100|mm|in|sigfig=1|abbr=on}} long and {{convert|5-10|mm|in|sigfig=1|abbr=on}} wide. Up to three pale yellow flowers {{convert|50-70|mm|in|sigfig=1|abbr=on}} wide are borne on a spike {{convert|100-250|mm|in|sigfig=1|abbr=on}} tall. The petals and lateral sepals spread widely apart and the labellum is relatively small with a short fringe and four or more rows of calli along its mid-line. Flowering occurs from August to October.[2]Taxonomy and namingCaladeni × triangularis was first formally described 1827 by Richard Sanders Rogers from a specimen collected between Wagin and Narrogin. The description was published in Transactions and proceedings of the Royal Society of South Australia.[3][4] The epithet (triangularis) refers to the shape of the labellum of this orchid.[2]Distribution and habitatThe shy spider orchid grows in woodland and shrubland between Perth and Esperance in the Avon Wheatbelt and Jarrah Forest biogeographic regions.[2][5] ConservationCaladenia × triangularis is classified as "Priority Four" by the Government of Western Australia Department of Parks and Wildlife,[5] meaning that is rare or near threatened.[6]References1. ^{{WCSP | 28730 | Caladenia x triangularis }} {{Taxonbar|from=Q15439666}}2. ^1 2 {{cite book|last1=Brown|first1=Andrew|last2=Dundas|first2=Pat|last3=Dixon|first3=Kingsley|last4=Hopper|first4=Stephen|title=Orchids of Western Australia|date=2008|publisher=University of Western Australia Press|location=Crawley, Western Australia|isbn=9780980296457|page=461}} 3. ^{{cite web|title=Caladenia x triangularis|url= https://id.biodiversity.org.au/instance/apni/574705|publisher=APNI|accessdate=16 October 2018}} 4. ^{{cite journal |last1=Rogers |first1=Richard S. |title=Contributions to the Orchidaceous flora of Australia |journal=Transactions and proceedings of the Royal Society of South Australia |date=1927 |volume=51 |pages=10–11 |url=https://www.biodiversitylibrary.org/item/129843#page/14/mode/1up |accessdate=18 October 2018}} 5. ^1 {{FloraBase|name=Caladenia x triangularis|id=1618}} 6. ^{{cite web|title=Conservation codes for Western Australian Flora and Fauna|url=https://www.dpaw.wa.gov.au/images/documents/plants-animals/threatened-species/Listings/Conservation%20code%20definitions.pdf|publisher=Government of Western Australia Department of Parks and Wildlife|accessdate=18 October 2018}} 5 : Caladenia|Endemic orchids of Australia|Orchids of Western Australia|Plants described in 1927|Orchid hybrids |
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