Oaks of the World

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  Quercus sebifera

Trel. 1924 Mem. Natl. Acad. Sci. 20: 93

Diagnosis here

Synonyms schenckiana Trel. 1924
ceripes Trel. 1924   (A. Camus : 179)
chuhuichupensis C.H.Mull. 1936
sebifera f. comitanensis Trel. 1924
Local names
Range Mexico (Chiapas, Hidalgo, Nuevo Leon, Oaxaca, Puebla, San Luis Potosi, Tamaulipas, Veracruz) ; 1600 m.-2500m ;
Growth habit often a bushy, rhizomatous shrub less than 1 m tall, or a shrub to 2 m;
Leaves 3-7 x 1-3.5 cm; deciduous; thick, coriaceous; obovate, oblong, oblanceolate to elliptic ; apex obtuse, mucronate or not; base obtuse to subcordate; margin thick, flat or slightly revolute, entire or dentate-crenate (1-4 pairs of shortly mucronate teeth, in the apical half of the blade); adaxially glaucous dull, glabrous except some stellate hairs at base of midrib; abaxially paler, dull, more or less bloomy or waxy, glabrous; 7-11 vein pairs, nearly flat above, raised abaxially; epidermis whitish 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 ovoid 1-1.5 cm long; singly or to 3 on a 0,5-2 cm long glabrous peduncle; small halfround cup 1.2-1.4 cm in diameter, with greyish appressed scales, enclosing 1/4 of nut; maturing in 1 year from September to November;

Bark, twigs and

bark grey; twigs reddish, bloomy, 1-3.5 mm thick, at first with sessile, stellate trichomes and glandular hairs, glabrescent, then glabrous; bud subglobose 1-3 mm wide, reddish; stipules short, pubescent, persistent; lenticels inconspicuous ;
Hardiness zone, habitat not hardy (?); prefers loamy, calcareous soils;

-- A. Camus : n° 17;
-- Sub-genus Quercus, Section Quercus, Series Leucomexicanae;
-- For Zavala-Chavez, 2003, it is a variety of Q.pringlei.
-- May be confused with Q. tinkhamii and Q. opaca, but it can be distinguished by its leaves which are somewhat waxy abaxially;

Subspecies and