Quercus jenseniana
Synonyms (1)
Geographic Range
SW and Central China (Fujian, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangxi, Yunnan, Zhejiang); 300-1700 m;
Growth Habit
10-20 m tall, may reach 35 m;
Leaves
12-25 x 6-12 cm; elliptic, oblong-elliptic or oboval-oblong; remaining 2 years; subleathery; apex acuminate to caudate ; base cuneate, sometimes subrounded; margin entire, sometimes wavy; both sides glabrous; 12-20 vein pairs; petiole hairless, 3-5 cm long, sulcate beneath;
Flowers
April to June, on female inflorescences 5-10 cm long;
Fruits
acorn 1.7-2 cm long, 1.3-1.5 cm wide; light brown; yellowish velutinous; thin cup 1.3 cm in diameter, densely tomentose inside, glabrescent outside, enclosing 1/2 or 1/3 of nut, with 6-9 concentric rings denticulate at rim; scar 4-6 mm wide, convex; stylopodium persistent; maturing in 2 years;
Common Names
Hardiness & Habitat
not hardy; forests on mountain slopes, valleys, along streams;
Additional Information
– A. Camus : n° tome 1, p. 303, 55; – Sub-genus Cerris, Section Cyclobalanopsis; – Section Cyclobalanoides ( Menitsky ). – Closely related to Q.argentata Korth.; – For Govaerts, 2007, Q. pinbianensis is a true species, in Yunnan. Threatened (IUCN Red List Category : CR)
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