Oaks of the World

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 Quercus vaseyana
AuthorBuckl. 1883
Synonymspungens var. vaseyana (Buckl.) C.H.Muller 1951
undulata Torr. var. vaseyana (Buckl.) Rydb.1901
pungens subsp vaseyana (Buckl.) E.Murray 1983
sillae Trel. 1924
Local namesVasey shin oak
Range W Texas (Edwards Plateau), NE Mexico (Chihuahua, Nuevo Leon, Tamaulipas); 300-800 m;
Growth habit usually 6-10 m, but often 0.3-1.5 m, bushy;
Leaves 3.5-8 x 1-3 cm, deciduous, leathery; oblong to lanceolate; apex obtuse or acute and mucronate; base cuneate or obtuse; margin flat, thick but not revolute, with 3-5 pairs of mucronate teeth from base to apex; dark shiny green above, glabrous or with some stellate hairs near the base of the midrib; dull, densely appressed tomentose beneath, with stellate and simple hairs, except on bigger veins; 5-8 vein pairs, slightly impressed above, prominent beneath; epidermis papillose; petiole 2-5 cm long, with stellate hairs;
Flowers male inflorescence 2-3 cm, hairy;
Fruits acorn 1-1.2 cm, shiny, pale brown, stalkless or nearly so; enclosed 1/3 by strongly warty cup; maturing in 1 year;

Bark, twigs and
buds

bark peeling, thin, furrowed; twigs slender becoming grey, smooth, glabrescent; very small buds 1-1.5 mm long, ovoid; stipules deciduous 3 mm, more or less pubescent;
Hardiness zone, habitathardiness zone : 7; dry, calcareous soils;
Miscellaneous -- no hybrid known;
--
today it is considered as a true species.
-- possible confusion with Q. tinkhamii which has similar leaves, but which is smaller with smaller leaves (only 2-5 cm long), with margin not dentate at the base, and not appressed stellate trichomes beneath;
Subspecies and
varieties
 
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