Cathaya is a genus in the pine family, Pinaceae, with one known living species, Cathaya argyrophylla.[2]Cathaya is a member of the subfamily Laricoideae, most closely related to Pseudotsuga and Larix. A second species, C. nanchuanensis, is now treated as a synonym,[3] as it does not differ from C. argyrophylla in any characters.
Cathaya is confined to a limited area in southern China, in the provinces of Guangxi, Guizhou, Hunan and southeast Sichuan. It is found on steep, narrow mountain slopes at 950–1800 m altitude, on limestone soils. A larger population has been reduced by over-cutting before its scientific discovery and protection in 1950.
The leaves are needle-like, 2.5–5 cm long, have ciliate (hairy) margins when young, and grow around the stems in a spiral pattern. The cones are 3–5 cm long, with about 15–20 scales, each scale bearing two winged seeds.
One or two botanists, unhappy with the idea of a new genus in such a familiar family, tried to shoehorn it into other existing genera, as Pseudotsuga argyrophylla and Tsuga argyrophylla.[4] It is however very distinct from both of these genera, and these combinations are not now used.
The Butchart Gardens in Victoria, British Columbia had a small living specimen. The tree died in 2017.
Whistling Gardens in Wilsonville, Ontario has a young specimen in its plant collection.
Fossil recordedit
Cathaya sp. fossils are described from the early Pleistocene of southern Portugal.[5] They are abundant in European brown coal deposits dating from between 10 and 30 million years ago.
Referencesedit
^Yang, Y.; Liao, W. (2013). "Cathaya argyrophylla". IUCN Red List of Threatened Species. 2013: e.T32316A2814173. doi:10.2305/IUCN.UK.2013-1.RLTS.T32316A2814173.en. Retrieved 25 September 2021.
^"Cathaya". Plants of the World Online. Royal Botanical Gardens Kew. Retrieved 2018-11-07.
^"Cathaya nanchuanensis". Plants of the World Online. Royal Botanical Gardens Kew. Retrieved 2018-11-07.
^"Cathaya argyrophylla". Plants of the World Online. Royal Botanical Gardens Kew. Retrieved 2018-11-07.
^Forest Context and Policies in Portugal: Present and Future Challenges by Fernando Reboredo – Springer, 28. aug. 2014 – ISBN978-3-319-08455-8
External linksedit
Gymnosperm Database: Cathaya argyrophylla
January 01, 1970
cathaya, this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, scholar, jstor, january, 2018, lea. This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Cathaya news newspapers books scholar JSTOR January 2018 Learn how and when to remove this message Cathaya is a genus in the pine family Pinaceae with one known living species Cathaya argyrophylla 2 Cathaya is a member of the subfamily Laricoideae most closely related to Pseudotsuga and Larix A second species C nanchuanensis is now treated as a synonym 3 as it does not differ from C argyrophylla in any characters CathayaTemporal range 30 0 0 Ma PreꞒ Ꞓ O S D C P T J K Pg N Conservation status Vulnerable IUCN 3 1 1 Scientific classification Kingdom Plantae Clade Tracheophytes Clade Gymnospermae Division Pinophyta Class Pinopsida Order Pinales Family Pinaceae Subfamily Laricoideae Genus CathayaChun amp Kuang Species C argyrophylla Binomial name Cathaya argyrophyllaChun amp Kuang Cathaya is confined to a limited area in southern China in the provinces of Guangxi Guizhou Hunan and southeast Sichuan It is found on steep narrow mountain slopes at 950 1800 m altitude on limestone soils A larger population has been reduced by over cutting before its scientific discovery and protection in 1950 The leaves are needle like 2 5 5 cm long have ciliate hairy margins when young and grow around the stems in a spiral pattern The cones are 3 5 cm long with about 15 20 scales each scale bearing two winged seeds One or two botanists unhappy with the idea of a new genus in such a familiar family tried to shoehorn it into other existing genera as Pseudotsuga argyrophylla and Tsuga argyrophylla 4 It is however very distinct from both of these genera and these combinations are not now used The Butchart Gardens in Victoria British Columbia had a small living specimen The tree died in 2017 Whistling Gardens in Wilsonville Ontario has a young specimen in its plant collection Fossil record editCathaya sp fossils are described from the early Pleistocene of southern Portugal 5 They are abundant in European brown coal deposits dating from between 10 and 30 million years ago References edit Yang Y Liao W 2013 Cathaya argyrophylla IUCN Red List of Threatened Species 2013 e T32316A2814173 doi 10 2305 IUCN UK 2013 1 RLTS T32316A2814173 en Retrieved 25 September 2021 Cathaya Plants of the World Online Royal Botanical Gardens Kew Retrieved 2018 11 07 Cathaya nanchuanensis Plants of the World Online Royal Botanical Gardens Kew Retrieved 2018 11 07 Cathaya argyrophylla Plants of the World Online Royal Botanical Gardens Kew Retrieved 2018 11 07 Forest Context and Policies in Portugal Present and Future Challenges by Fernando Reboredo Springer 28 aug 2014 ISBN 978 3 319 08455 8External links editGymnosperm Database Cathaya argyrophylla Conifers Around the World Cathaya argyrophylla Retrieved from https en wikipedia org w index php title Cathaya amp oldid 1194589826, wikipedia, wiki, book, books, library,
