Biology:Nothotsuga
Nothotsuga is a genus of coniferous trees in the family Pinaceae endemic to China. Nothotsuga contains only one living species, Nothotsuga longibracteata, commonly known as the bristlecone hemlock or chang bao tie shan (长苞铁杉),[1] which is found in southeastern China, in southern Fujian, northern Guangdong, northeast Guangxi, northeast Guizhou, and southwest Hunan.
The genus was more diverse in the past, with its earliest fossils being known from Europe during the late Eocene epoch, with the genus being present in Europe as recently as the Pliocene. The oldest fossils near its current distribution dating to the Miocene epoch.[2]
Description
N. longibracteata is an evergreen tree reaching 30 m (100 ft) tall. The leaves are flat, needle-like, 1.2–4 cm (0.5–1.6 in) long and 1–2 mm (0.04–0.08 in) broad, very similar to those of Tsuga. The cones are very similar to those of Keteleeria, but smaller, 2.5–5 cm (1–2 in) long, erect, and mature in about 6–8 months after pollination.
Taxonomy
Conservation
It is a very rare tree listed as a near-threatened species by the International Union for Conservation of Nature due to historical deforestation, though it is now protected.[3]
References
- ↑ Flora of China: Cycadaceae through Fagaceae. Flora of China. 4. Science Press and Missouri Botanical Garden Press. 1999. pp. 39–40. ISBN 0-915279-70-3. OCLC 223628675.
- ↑ Dong, Junling; Li, Zhe; Gao, Jingxin; Wang, Qian; Sun, Bainian (2022-12-26). "A New Fossil Species of Nothotsuga from the Mula Basin, Litang County, Sichuan Province and Its Paleoclimate and Paleoecology Significance" (in en). Biology 12 (1): 46. doi:10.3390/biology12010046. ISSN 2079-7737. PMID 36671738.
- ↑ Farjon, A.; Christian, T.; Zhang, D. (2013). "Nothotsuga longibracteata". IUCN Red List of Threatened Species 2013. doi:10.2305/IUCN.UK.2013-1.RLTS.T34162A2848919.en. https://www.iucnredlist.org/species/34162/2848919. Retrieved 2 October 2024.
Further reading
- Jin-xing, Lin (1995). "Wood and Bark Anatomy of Nothotsuga (Pinaceae)". Annals of the Missouri Botanical Garden 82 (4): 603–609. doi:10.2307/2399841. Bibcode: 1995AnMBG..82..603J. https://www.biodiversitylibrary.org/part/26722.
External links
Template:Acrogymnospermae classification Wikidata ☰ Q63255706 entry
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