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Quercus depressipes | |
Author | Trel. 1924 Mem. Natl. Acad. Sci. 20:
90 Diagnosis here |
Synonyms |
bocoynensis C.H.Muller 1938 |
Local names | depressed
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 |
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, habitat | hardy;
all types of soils, but prefers calcareous, dry ones; |
Miscellaneous | --
A. Camus : n° 181; -- Sub-genus Quercus, Section Quercus, Series Leucomexicanae; -- Hybridizes with Q.rugosa; |
Subspecies and varieties |
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