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Quercus deserticola | |
Author |
Trel. 1914 Mem. Natl. Acad. Sci. 20: 79 |
Synonyms | alveolata Trel. 1924 Diagnosis
here bipedalis Trel. 1924 Diagnosis here tamiapensis C.H.Mull. 1942 texcocana Trel. 1924 (A. Camus : 247) Diagnosis here vallicola Trel. 1924 Mem. Natl. Acad. Sci. 20: 81 (A. Camus : 246) Diagnosis here |
Local names | encino
tecux; |
Range | Mexico
(D.F., Guanajuato, Hidalgo, Jalisco, Mexico, Michoacan, Puebla, Queretaro,
Sinaloa); 1100 - 2800 m ; |
Growth habit | rarely
exceeding 3 m (may sometimes reach 10 m); crown spreading, wider than
high; |
Leaves | 4-9
x 1.5-3 cm; deciduous or semi-evergreen; leathery, rough; oblong, oboval
or elliptic; apex rounded or obtuse, mucronate; base rounded sometimes
cordate; margin revolute, thick, entire or undulate or crenate-dentate,
with 2-5 pairs of lobes or teeth with straight mucro 0.3-0.5 mm long;
dark yellow-green above with some scattered stipitate multiradiate 7-11
rays hairs, especially along midvein; paler below, glaucous, with dense,
pediculate, stellate pubescence and some glandular hairs; épidermis
slightly bullate; 6-9 vein pairs, slightly curved, impressed above, prominent
beneath; petiole tomentose, 2-6 mm long, thickened at base; |
Flowers |
|
Fruits | acorn 1.5 cm, ovoid; 1 to 3 together, on a stout, tomentose, 0.3-1 cm long stalk; enclosed 1/3 in the cup; cup half-round, 1.4-2 cm wide, with scales obtuse covered with white pubescence ; stylopodium persistent ; maturing in 1 year, from August to October; |
Bark, twigs and |
bark sulcate, grey or dark
coffee, with conspicuous lenticels on old twigs; twigs 1.5-3 mm thick,
with dense, yellow, persistent tomentum; bud subglobose, pale coffee,
hairy, 2-4 mm; |
Hardiness zone, habitat | not quite hardy (zone 8); dry, rocky soils ; |
Miscellaneous |
-- A. Camus : n° 251;
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Subspecies and varieties |
-- Q.vallicola is considered by some Authors (Govaerts & Frodin), as true species, but not by today's Mexican Authors (Susana Valencia-A., 2006) |
Pictures |
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