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Quercus asymmetrica[2] is the accepted name of an endemic oak tree species in the Asian sub-genus of 'ring-cupped oaks' and the family Fagaceae.[3][4] 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.[5]

Quercus asymmetrica
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Fagales
Family:	Fagaceae
Genus:	Quercus
Subgenus:	Quercus subg. Cyclobalanopsis
Species:	Q. asymmetrica
Binomial name
Quercus asymmetrica Hickel & A.Camus
Synonyms[1]
Cyclobalanopsis patelliformis (Chun) Y.C.Hsu & H.Wei Jen Quercus patelliformis Chun

Description

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.[6]

References

External links

• Line drawing from Flora of China (Figs. 1-4 only)

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