Quercus rehderiana Hand.-Mazz.

China (Yunnan, Sichuan, Guizhou), Tibet, Thailand ; 1500 - 4000 m ; introduced in UK in 1981 by Roy Lancaster;

may reach 20 m tall; at high elevation is only a small tortuous shrub;

4-10 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;

May-June; large pistillate inflorescences 3,5-12 cm long; male catkins reaching 18 cm long;

acorn small, 1 cm long, 0.8 cm in diameter, 1 cm long; mucronate; on a long rachis to 12 cm; enclosed 1/2 by cup; cup scaly, 0.8-1.2 cm in diameter; maturing in 2 years;

hardy; prefers calcareous soils;

– A. Camus : tome 1, p. 399, n° 95 (under the name Q. pseudosemicarpifolia , with Q. rehderiana as a synonym); – Sub-genus Cerris, Section Ilex; – Q. pseudosemicarpifolia could differ from Q. rehderiana in having secondary veins impressed above, the presence of some sparse hairs beneath. For A. Camus, Q. rehderiana is a synonym of Q. pseudosemicarpifolia (tome 1, p. 399, n° 95); Sichuan, Yunnan, Xizang. A. Camus named this taxon Q. pseudosemecarpifolia instead of its original name Q. rehderiana because she thought that the name Q. rehderiana was too similar to Q. × rehderi Trel. – 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 ;