Oaks of the World

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  Quercus sebifera
Author

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

Diagnosis here

Synonyms

schenckiana Trel. 1924
ceripes Trel. 1924   (A. Camus : 179)
sebifera f. comitanensis Trel. 1924

Local names
Range Mexico (Chiapas, Veracruz) ; 1600 m.-2500m ;
Growth habit often a bushy, rhizomatous shrub less than 1 m tall, or a shrub to 3 m;
Leaves 2-5 x 1-2.5 cm; deciduous; thick, coriaceous; obovate ; 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, glabrous, glaucous with some brown or black areas; 4-7 vein pairs, impressed or 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 paired on a 0,5-2.5 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
buds

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;
Miscellaneous

-- A. Camus : n° 17;
-- Sub-genus Quercus, Section Quercus, Series Leucomexicanae;
-- For Zavala-Chavez, 2003, it is a variety of Q.pringlei.

-- For S.Valencia & A.Coombes 2026, Q. ceripes Trel. 1924 is a true species, with Q. schenckiana as synonym = shrub or small tree to 3-5 m; leaves stiff and coriaceous, glossy to dull, glabrous with sometimes wax deposits below, margin with 1-3 short and spiny teeth, rarely entire; fruits annual on a short peduncle to 0.5 mm long; 1380-2500 m; Mexico (Oaxaca, Puebla) in dry habitat.


Subspecies and
varieties
Pictures

 

More pictures HERE