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Quercus jenseniana | |
Author | Hand.-Mazz. 1922 Anz. Akad. Wiss. Wien, Math.-Naturwiss. Kl. 59: 52 |
Synonyms | Cyclobalanopsis
jenseniana (Hand.-Mazz.) Cheng & Hong ex Q.F.Zheng 1982 Cyclobalanopsis pinbianensisY.C. Hsu & H.Wei Jen 1976 pinbianensis (Hsu & Wei Jen) Huang & Chang 1992 Guihaia 12: 303 Lithocarpus jensenianus (Hand.-Mazz.) Chun & Metcalf 1942 Lithocarpus dunnii F.P.Metcalf 1931 |
Local names | da
ye qing gang |
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; |
Bark, twigs and |
twig
thick, sulcate, hairless, with numerous pale brown lenticels; |
Hardiness zone, habitat | not
hardy; forests on mountain slopes, valleys, along streams; |
Miscellaneous | --
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, |
Subspecies and varieties |
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