Oaks of the World

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  Quercus subtriloba

Trel. 1924 Mem. Natl. Acad. Sci. 20: 81

Diagnosis here

Local names
Range Mexico (Hidalgo)
Growth habit may reach more than 3 metres tall;

4-6 x 1-2 cm; deciduous; oblong sub-elliptical; rounded at both ends, or sometimes slightly attenuate at base; margin entire or sinuate or sometimes with 3-5 lobes; glabrous or pubescent above on the midrib; densely rufous tomentose beneath; petiole 3.5 cm long, tomentose or not;

Fruits acorn 1-2 cm, ovoid; solitary on a 4-5 mm long tomentose peduncle; enclosed 1/2 by halfround, tomentose cup; maturing in 1 year;

Bark, twigs and

twig 1-2 mm thick, slightly sulcate, tomentose, hairless the second year; bud reddish, becoming glabrescent; silky stipules;
Hardiness zone, habitat not hardy;
Miscellaneous -- A. Camus : tome 2, p. 645, n 247;
-- Sub-genus Quercus, Section Quercus, Series Leucomexicanae;
-- For today's Mexican Authors (S. Valencia-A. 2004) it is a synonym of Q.repanda.

Subspecies and