Quercus asymmetrica[3] is an oak tree species in the beech family Fagaceae.[4][5] It is found in China (specifically, Guangxi Province and Hainan Province, where it is called 托盘青冈 tuo pan qing gang) and northern Vietnam.[6] It is placed in subgenus Cerris, section Cyclobalanopsis.[7]
| Quercus asymmetrica | |
|---|---|
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Fagales |
| Family: | Fagaceae |
| Genus: | Quercus |
| Subgenus: | Quercus subg. Cerris |
| Section: | Quercus sect. Cyclobalanopsis |
| Species: | Q. asymmetrica
|
| Binomial name | |
| Quercus asymmetrica | |
| Synonyms[2] | |
|
Cyclobalanopsis patelliformis (Chun) Y.C.Hsu & H.Wei Jen | |
Description edit
Quercus asymmetrica is a tree growing up to 15 m tall, with branchlets that are conspicuously angular when young; by second year, they become glabrous with occasional lenticels. The leaves are leathery, elliptic to ovate-lanceolate, 50-120 × 25–60 mm and have 9-11 secondary veins on each side of mid-vein. The acorns are oblate, 25–28 mm in diameter, greyish-brown, with a scar 15–20 mm in diameter, impressed or flat. The cupules are 20–30 mm in diameter. A persistent stylopodium is approximately 40 mm in diameter. In China, flowering is in May–June and acorns may be found in October–November of the following year.[8]
References edit
- ^ Carrero, C.; Strijk, J.S. (2020). "Quercus asymmetrica". IUCN Red List of Threatened Species. 2020: e.T78805106A173042077. doi:10.2305/IUCN.UK.2020-3.RLTS.T78805106A173042077.en. Retrieved 12 November 2022.
- ^ The Plant List (accessed 11/7/2017)
- ^ Hickel & A.Camus, 1923 In: Bull. Mus. Natl. Hist. Nat. 29: 601
- ^ Roskov Y.; Kunze T.; Orrell T.; Abucay L.; Paglinawan L.; Culham A.; Bailly N.; Kirk P.; Bourgoin T.; Baillargeon G.; Decock W.; De Wever A. (2014). Didžiulis V. (ed.). "Species 2000 & ITIS Catalogue of Life: 2014 Annual Checklist". Species 2000: Reading, UK. Retrieved 26 May 2014.
- ^ WCSP: World Checklist of Selected Plant Families
- ^ Min Deng; Zhe-Kun Zhou & Allen Coombes (2010). "Lectotypification and new synonymy in Quercus subg. Cyclobalanopsis (Fagaceae)" (PDF). Novon. 20 (4): 400–405. doi:10.3417/2004208. S2CID 55587214.
- ^ Denk, Thomas; Grimm, Guido W.; Manos, Paul S.; Deng, Min & Hipp, Andrew L. (2017). "Appendix 2.1: An updated infrageneric classification of the oaks" (xls). figshare. Retrieved 2023-02-24.
- ^ Flora of China: Cyclobalanopsis patelliformis (accessed 11/7/2017)