Oaks of the World

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 Quercus semecarpifolia
AuthorSm. in Rees 1814
Synonymscassura Buch.-Ham. ex D.Don 1825
obtusifolia D.Don 1825, not Rydb. 1901
Local namesBrown oak ; kharshu oak ; gao shan li ;
RangeIndia; Nepal; Afghanistan; north Tibet; Myanmar; 2500-4000 m;
Growth habitreaches 20-30 m tall; often smaller; trunk to 1.5 m in diameter; columnar habit with domed crown; spreading branches;
Leaves 2-5 x 1.5-3 cm (may reach 10 x 6 cm); semi-evergreen; oval; apex slightly pointed or obtuse; base cordate; margin entire (above all on older twigs) or with 1-8 sharp teeth, wavy; dark green, soon hailess above; hairy, golden beneath, but older leaves become nearly glabrous; 7-12 vein pairs; mirib sinuous near apex; petiole stout, 3-7 mm long, brown tomentose;
Flowers male catkins 5-12 cm, golden yellow; pistillate inflorescences 2-7 cm, bearing 1-3 flowers; May-June;
Fruits acorn 1.8-2.5 cm in diameter, globose, glabrous, black when mature; singly or paired; apex pointed; cup flat, 1 mm thick, at the base of the nut only; scales triangular, grey brown; maturing in 2 years;

Bark, twigs and
buds

bark dark greyish, fissured into small square plates; twigs, buds, stipules pubescent, becoming hairless at fall; twigs glabrescent with rounded, pale lenticels, becoming dark brown green and rough; buds conical 3-6 mm long;
Hardiness zone, habitathardy; all types of soils; mountain forests;
Miscellaneous-- A. Camus : n 92;
-- Belongs to the Ilex Group, according to Denk & Grimm 2010;
-- See the Key for Asian simalar Quercus;
Subspecies and
varieties
-- Q.pannosa Hand.-Mazz. 1929
= Q.ilex var. rufescens Franchet 1899 p.p.
= Q.semecarpifolia var. rufescens (Franch.) Schottky 1912
= Q. aquifolioides var. rufescens (Franch.) W.W.Sm. 1924
is an ecological race with  leaves shorter (max. 4.5 cm) and not or less revolute, with hairs covering densely the secondary veins, peduncle shorter and cup adherent completely to the nut;
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