Oaks of the World

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 Quercus depressipes
Author Trel. 1924 Mem. Natl. Acad. Sci. 20: 90
Diagnosis here
Synonyms

bocoynensis C.H.Muller 1938
oblongifolia var. pallidinervis Trel.
tamiapensis C.H.Mull. 1942
texcocana Trel. 1924

Local namesdepressed oak ; mexican dwarf oak ; encino enano ; Davis mountain oak ;
Range Mexico, scattered at high elevations (Chihuahua, Durango, South Zacatecas, North Jalisco) ; Texas (Mt Livermore in Davis Mountains) ; 1800-3200 m ; very restricted area;
Growth habit not exceeding 1or 1.5 m, rhizomatous, in dense thickets;
Leaves 1.5-5 cm x 1-3; deciduous; thick, leathery; oblong-oboval to elliptic or almost orbicular; apex mucronate, rounded or subacute; base subcordate; margins flat, entire or remotely toothed-crenate near apex (1-4 pairs of mucronate teeth); dull blue green above and hairless except some fascicled hairs near base; abaxially with numerous glandular, golden trichomes not seen with naked eye; 4-8 vein pairs, reddish or yellowish, straight or slightly curved; petiole 1-3 mm long, glabrous, bloomy;
Flowers in May; male catkins 2 cm long, with numerous flowers; female inflorescences 5-6 mm long with 2 pubescent flowers;
Fruits acorn brown, elliptic, 1-1.5 cm; singly or to 3; apex rounded, hairless; peduncle glabrous 1.5-3.5 cm long; cup with somewhat warty scales, covering 1/3 to 1/2 of nut; cotyledons connate; matures in 1 year, in December;

Bark, twigs and
buds

bark grey, scaly; twigs at first brown, aging reddish grey, sometimes hairy, with inconspicuous lenticels; buds brown, subglobose, hairless, 1.5-2 mm long; stipules soon deciduous;
Hardiness zone, habitathardy; all types of soils, but prefers calcareous, dry ones;
Miscellaneous-- A. Camus : n° 181;
-- Sub-genus Quercus, Section Quercus;
-- hybridizes with
Q.rugosa;
Subspecies and
varieties
 
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