Oaks of the World

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 Quercus skinneri
AuthorBenth. 1841
Synonymschiapasensis Trel. 1915
grandis Liebm. 1854
grandis var. tenuipes Trel. 1924
hemipteroides Mull. 1937
salvadorensis Trel. 1930
trichodonta Trel. 1938
Local nameschicharro;
RangeMexico (Chiapas, Oaxaca, Tamaulipas, Veracruz) Guatemala, El Salvador, Honduras 700-2200 m
Growth habit15-35 m;
Leaves 7-25(-30) cm x 3-10(-12); elliptic or ovate; thin or sometimes semi-leathery; apex attenuate, acuminate, bristle-tipped; base truncate, wide, sometimes cordate or obtuse; margin thick, flat or slightly revolute, cartilaginous, with 10-13 pairs of bristle-tipped teeth; dark green to greyish green adaxially, slightly lustrous, hairless or sometimes with a few trichomes along midrib; paler beneath, glabrous or with some hairs along midvein and axil tufts; 9-15 vein pairs, straight and parallel, flat adaxially; epidermis smooth, papillose; petiole thin, 3-7 cm long, glabrous or nearly so;
Flowers

February to March; male catkins 7 cm long, pubescent, usually few-flowered; pistillate ones 0.5 cm long, 1 to 2-flowered;

Fruits acorn ovoid 2-5 cm long, light brown, tomentose, with a very thick pericarp; singly or paired on a 0.5-1.5 cm long peduncle; cup half-round or slightly flattened, not rolled at rim, with appressed, pubescent, strongly keeled scales, 1.8-5 cm wide, enclosing less than 1/4 of nut; maturing in 2 years from July to December;

Bark, twigs and
buds

bark dark, fissured into square plates; twig 1-4 mm in diameter, glabrous or nearly so, reddish brown or sometimes paler, lustrous, with pale lenticels; bud ovoid, obtuse, 4-7 mm long, with hairless scales; stipules 7-15 mm long, pubescent, deciduous;
Hardiness zone, habitatnot hardy ; wet montane forests; fast growing;
Miscellaneous-- Section Lobatae, sub-section Acutifoliae;
-- Very polymorphic species, often misidentified in the past;
-- Silvia Romero Rangel, a today's Mexican Author (2006), published her revision of the sub-section Acutifoliae, with many modifications of the previous Classification.
Subspecies and
varieties
 
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