Oaks of the World

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  Quercus semiserrata
Author Roxb. 1832 Fl. Ind. ed. 1832 3: 641
Synonyms annulata Hook.f. ex A.DC 1864 nom. illeg. not Smith in Rees 1819
Cyclobalanopsis semiserrata (Roxb.) Oersted 1867
Cyclobalanopsis semiserratoides Y.C. Hsu & H.W. Jen 1976 Acta Phytotax. Sin. 14(2): 84
semiserratoides (Hsu & H.W. Jen)C.C. Huang & Y.T.Chang 1992
Local names wu chi qing gang
Range China (SE Tibet, Yunnan); NE India; Myanmar; Thailand; Bangladesh; 400-1500 m;
Growth habit 10 m tall and more; trunk staight, stout;
Leaves 13-25 x 3-7 cm; evergreen; broadly oblanceolate or elliptic-obanceolate; thin, papery; apex acuminate to acute; base cuneate; margin entire, apicaly minutely serrate; hairless, shiny above; hairless, glaucous, waxy beneath; young leaves have a yellowish tomentum ; 9-15 vein pairs straight, parallel, prominent beneath only, at an angle of 30° with midrib; petiole glabrous 1.5-3.5 cm long;
Flowers male catkins drooping, fulvous tomentose; pistillate inflorescences 2-6 cm long, bearing 2 or 3 flowers with 4-6 styles 3.5 cm long, bifid and divaricate; 
Fruits acorn 3.5 cm long, 1.5 cm across, oblong-ellipsoid; apex depressed, hairy and mucronate; basal scar 1.5 cm wide, convex; stylopodium persistent; enclosed 1/2 to 1/3 by cup; cup thin, brown tomentose, sessile, with 6-7 concentric rings of scales, the lower with margin denticulate; maturing in 1 year;

Bark, twigs and

bark dark grey, rough, hard, 1.5 cm thick; twigs tomentose at first, becoming glabrous, with numerous white lenticels; bud ovoid, tomentose, rusty, with stipules linear, elongated, hairy;
Hardiness zone, habitat not quite hardy (no success in G.B., but thrives well in Ustaritz, Basque Country, France); inhabits moist subtropical forests
Miscellaneous -- A. Camus : tome 1, p. 186, n 4;
-- Sub-genus Cerris, Section Cyclobalanopsis;
-- Section Semiserrata, sub-section Semiserratae (Menitsky).
-- Threatened (IUCN Red List Category : CR)

-- Q. annulata Sm. in Rees 1819 = see Q. glauca

Subspecies and
--- var. mannii Hook.f. 1888 Fl. Brit. India 5: 604
vast range; large leaves oval oblong, apex obtuse; cupule with rings undulate at rim; for The Plant List 2013, it is a synonym of Q.gemelliflora;

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