| Quercus kouangsiensis | |
| Author | A.Camus 1937 Bull. Soc. Bot. France 84: 176 |
| Synonyms | Cyclobalanopsis kouangsiensis (A.Camus)
Y.C.Hsu & H.Wei Jen 1976 Cyclobalanopsis macrocalyx var. tomentosa Metcalf 1942 nemoralis Chun 1947 |
| Local names | guang xi qing gang |
| Range | China (Hainan, Guangxi) ;700-900 m ; |
| Growth habit | 12-15 m; |
| Leaves | 12-18 cm x 3-6 cm; leathery; ovate or oblong-elliptic; base cuneate, apex acute; margin entire or apical 1/3 dentate or denticulate; densely tomentose beneath (stellate, pale greyish brown tomentum); 10-14 vein pairs, prominent above, straight, reaching margin; petiole 1.5-3 cm, densely light brown tomentose; |
| Flowers | pistillate inflorescences
1.5 cm, with brown tomentose rachis, from March to April; |
| Fruits | acorn 3-4.5
cm long, 2.5 cm wide; ovoid to cylindrical; silky at first, then glabrous
; apex rounded, base more or less convex; basal scar 1.5 cm in diameter;
enclosed 1/2 or more by cup; cup campanulate, 2-3 cm high, 2-2.8 cm wide,
tawny tomentose outside, silky inside, 1.6-3 mm thick, scales in 8-9 concentric
rings with margin entire or denticulate; maturing in 2 years, in October-December;
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Bark, twigs and |
twig
sulcate, densely tomentose; |
| Hardiness zone, habitat | not hardy; |
| Miscellaneous | --
A. Camus : n° 1 bis; -- Sub-genus Cerris, Section Cyclobalanopsis; -- Section Semiserrata, sub-section Semiserratae (Menitsky). -- Threatened (IUCN Red List Category : EN). -- Closely related to Q.pachyloma ; -- Differs from Q.macrocalyx in having a thinner cup with fewer concentric rings, a bigger basal scare, leaves tomentose beneath and remotely denticulate in apical half (whereas Q.macrocalyx has hairless, entire, apicaly acuminate leaves). |
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