Quercus rehderiana

	Quercus rehderiana
Author	Hand.-Mazz. 1925 Anz. Akad. Wiss. Wien, Math.-Naturwiss. Kl. 62: 129
Synonyms	longispica (Hand.-Mazz.) A.Camus 1936 (Camus = n° 94) Chênes Atlas 1: 37 pseudosemecarpifolia A.Camus 1936 Chênes Atlas 1: 31 semecarpifolia var. glabra Franchet 1899 semecarpifolia subsp glabra (Franch.) Hand.-Mazz. 1929 semecarpifolia var. longispica Handel-Mazzetti 1929 dilatata var. yunnanensis Schottky 1912
Local names	mao mai gao shan li ;
Range	China (Yunnan, Sichuan, Guizhou), Tibet, Thailand ; 1500 - 4000 m ;
Growth habit	may reach 20 m tall; at high elevation is only a small tortuous shrub;
Leaves	3-6 x 2-4 cm; persist for 3 years; oval; rounded at both ends; margin entire, remotely wavy, with some spiny teeth; glabrescent on both sides (hairs beneath, if any, are simple and fascicled); 4-12 vein pairs, not sunken underneath; petiole 2-7 mm long;
Flowers	May-June; large pistillate inflorescences 3,5-12 cm long; male catkins reaching 18 cm long;
Fruits	acorn small, 1 cm long, 0.8 cm in diameter; mucronate; enclosed 1/2 by cup; cup scaly, 0.8-1.2 cm in diameter; maturing in 2 years;
Bark, twigs and buds	young twigs at first pale brown tomentose, becoming hairless;
Hardiness zone, habitat	hardy;
Miscellaneous	-- A. Camus : n° 95; -- Sub-genus Cerris, Section Ilex; -- For some Authors, Q.longispica is a separate species, featuring a rusty, persistent tomentum (made of various types of hairs including glandular ones on the lower side of the leaves), margins entire or with spiny teeth, and pistillate inflorescences 5-16 cm long ; for other today Authors, it is a synonym of Q.semecarpifolia; -- For Menitsky, Q.rehderiana has several synonyms : Q.semecarpifolia subsp glabra, Q.aquifolioides, Q.guajavifolia, Q.longispica and Q.pseudosemecarpifolia. -- See the Key for Asian similar Quercus;
Subspecies and varieties	-- Q. pseudosemecarpifolia could be a variety whose leaves feature scattered hairs beneath; Sichuan, Yunnan, Xizang.
Pictures	drawing 1 drawing 2

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