| Quercus glaucoides | |
| Author | Mart. & Gal. 1843 Bull. Acad. Roy. Sci. Bruxelles 10(1): 209 |
| Synonyms | baldoquinae Trel. 1924 Diagnosis
here cancellata Trel. 1924 Diagnosis here conjungens Trel.1924 Diagnosis here cordata Mart. & Gal. 1843 edwardsiae C.H.Muller 1942 glaucophylla Seemen ex Loes. 1900 harmsiana Trel.1924 Diagnosis here |
| Local names | encino
chaparro ; canyon oak ; smoky oak ; |
| Range | Center and
South-West Mexico ( |
| Growth habit | 3-8 m tall, trunk 25-40 cm wide; |
| Leaves |
8-12 x 4-7 cm; deciduous
or semipersistent; coriaceous; obovate, elliptic, oblong to oblanceolate;
apex rounded, sometimes acute or retuse, mucronate, rarely emarginate;
base round to cordate, sometimes slightly oblique; margin thickenned,
not or slightly revolute, entire or crenate-dentate with 4-7 pairs of
obtuse, broad, mucronate teeth; blue green, dull, glabrous above or
with at base a sparse pubescence made of stellate trichomes; yellowish
green beneath, glabrous or seldom with scarce and scatterd stellate
trichomes and glandular ones; 6-12 yellowish vein pairs, prominent on
both sides, more abaxially than adaxially; pruinose, glaucous, papillose
epidermis; petiole 2-7 mm, often dark reddish, glabrescent, pruinose;
|
| Flowers | in April-May;
male catkins 6 cm long, with numerous flowers; |
| Fruits | acorn 0.8-1.3 cm, ovoid, brown; paired or to 3; on a 3-4 cm long, glabrous peduncle; enclosed 1/3 by cup; cup with tomentose scales; cotyledons free; maturing in 1 year from July to November; |
|
Bark, twigs and |
bark
scaly, dark grey; twig 1-3 mm thick, yellowish grey with numerous light
brown lenticels; bud 1-2,5 mm, ovoid conical, obtuse, dark brown; |
| Hardiness zone, habitat | not hardy; prefers calcareous, dry sites; |
| Miscellaneous | --
A. Camus : n° 201; -- Sub-genus Quercus, Section Quercus, Subsection Leucomexicanae, Group Glaucoideae; -- No hybrids known yet; -- Not to be confused with Q.glaucoides ( Schottky) Koidz. (= Q.shottkyana). -- For Susana Valencia-Avalos, 2004, Q.edwardsiae C.H. Mull 1942 (Amer. Midl. Naturalist 27: 472) is a separate species in Nuevo Leon; -- Easely recognized by its glaucous, dull and glabrous leaves, with entire or crenate margin or with 4-7 pairs of basally broad, mucronate teeth at margin. |
| Subspecies and varieties |
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| Pictures |
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