Oaks of the World

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 Quercus sebifera
AuthorTrel. 1924
Synonymsschenckiana Trel. 1924
ceripes Trel. 1924   (A. Camus : 179)
chuhuichupensis C.H.Muller 1938
sebifera f. comitanensis Trel. 1924
Local names 
Range Mexico (Chiapas, Hidalgo, Nuevo Leon, Oaxaca, Puebla, San Luis Potosi, Tamaulipas, Veracruz) ; 1600 m.-2000m ;
Growth habit often a bushy, rhizomatous shrub less than 1 m tall, or a shrub to 2 m;
Leaves 2-5 x 1-2.5 cm; deciduous; thick, coriaceous; oboval, oblanceolate to elliptic ; apex obtuse, mucronate; base rounded to cordate; margin thick, flat or slightly revolute, entire or dentate-crenate (1-4 pairs of short mucronate teeth); adaxially grey-green, lustrous, glabrous except some hairs at base of midrib; abaxially paler, dull, more or less bloomy, glabrous, with some stalkless, stellate hairs along midrib; 4-7 vein pairs; epidermis papillose; petiole 2.5-4 mm long, hairless, reddish with dark base;
Flowers March to May; male catkins 1.5-3.5 cm long, with numerous flowers; female 1.5 cm long, with 2 pubescent flowers;
Fruits acorn subglobose or ovoid 1-1.5 cm long; singly or paired on a 0,5 cm long peduncle; small halfround cup 1-1.2 cm in diameter, with greyish appressed scales, enclosing 1/4 of nut; maturing in 1 year from September to November;

Bark, twigs and
buds

bark grey; twigs reddish, bloomy, 1-3.5 mm thick, with sessile, stellate trichomes and glandular hairs, glabrescent; bud subglobose 1-3 mm wide, reddish; stipules short, pubescent, deciduous;
Hardiness zone, habitat not hardy (?); prefers loamy, calcareous soils;
Miscellaneous-- A. Camus : n° 17;
-- Section Quercus;
-- For Zavala-Chavez, 2003, it is a variety of Q.pringlei.
-- For Susana Valencia-Avalos, 2004, Q.chuichupensis (sometimes written chuhuichupensis) is synonym of Q.toumeyi.
Subspecies and
varieties
 
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