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Cathaya is a genus in family Pinaceae and has one known, living species, Cathaya argyrophylla. A second species, C. nanchuanensis, is now treated as a synonym, as it does not differ from C. argyrophylla in any characters. Cathaya is a member of the subfamily Laricoideae, most closely related to Pseudotsuga and Larix.
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 to 1800 meters altitude, on limestone soils. A larger population has been reduced by over-cutting.
The needles have ciliate (hairy) tips when young and grow around stems in a spiral pattern.
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. It is however very distinct from both of these genera, and these combinations are not now used.
Links to other Pinaceae
Pinus - PiceaAbout 35; see text. Norway Spruce Picea abies cone Spruce refers to trees of the Genus Picea a genus of about 35 species of coniferous evergreen trees in the Family Pinaceae, found in the northern temperate and boreal regions of the earth. Spruces are lar - Cathaya - Larix - Pseudotsuga - AbiesFirs Abies are a genus of between 45-55 species of evergreen conifers in the family Pinaceae. All are trees, reaching heights of 10-80 m tall and trunk diameters of 0. 5-4 m when mature. Firs can be distinguished from other members of the pine family by t - CedrusCedrus deodara ''Cedrus libani C. libani var. libani C. libani var. stenocoma C. libani var. brevifolia C. libani var. atlantica Cedar correctly refers to those trees belonging to the genus Cedrus in the coniferous plant family Pinaceae. They are most clo - Keteleeria - Pseudolarix - Nothotsuga - TsugaThe genus Tsuga ( Pinaceae) includes those trees called hemlock (see hemlock for other senses of the word). The genus includes 8 species, 4 in North America and 4 in Asia. The name Tsuga is the Japanese word for Tsuga sieboldii''. Western Hemlock, Tsuga h
Pinaceae
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