Oaks of the World

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  Quercus toumeyi
Author Sarg. 1895 Gard. & Forest 8: 92
Synonyms hartmanii Trel. 1924 Diagnosis here
Local names Toumey's oak;
Range USA (South Arizona, West Texas, New-Mexico); Mexico (Sonora, Chihuahua); 1500-2400 m;
Growth habit usually shrubby, 2-3 m tall; numerous spreading branches;
Leaves 1.2-3 x 0.6-1.5 cm; deciduous or subevergreen; leathery; elliptic or oblong-elliptic, sometimes oval; apex acute or obtuse, mucronate; base rounded or remotely cordate, seldom cuneate; margin flat, cartilaginous, mostly entire, or with sometimes 2-4 pairs of mucronate teeth towards apex; lustrous above, hairless or sometimes with scattered stellate hairs, mostly at base of midrib; dull beneath with sessile, 4-14 rayed stellate hairs and white glandular ones; 5-8 vein pairs; epidermis smooth, papillose; petiole 1-4 mm long, hairy, reddish;

April to June; male catkins 2 cm long; female catkins 0.5-0.7 cm long, with 1-3 flowers, sessile or on a 2-5 mm long stalk;

Fruits acorn 1.2-1.5 cm long; oblong; cup subsessile, shallow, enclosing 1/3 of nut, with slightly warty, pubescent scales; maturing in 1 year from August to October;

Bark, twigs and

bark thin, rough, scaly, fissured, dark grey; young twigs 1-2 mm thick, hairy, smooth, red brown; older twigs rough, grey to blackish; buds red brown, ovoid, 0.5-1 mm long; stipules sometimes persistent around buds;
Hardiness zone, habitat hardy; all types of soils; prefers dry rocky slopes;
Miscellaneous -- A. Camus : n 182;
-- Sub-genus Quercus, Section Quercus, Series Leucomexicanae;
-- Discovered in 1894 by James Toumey (1865-1932), American botanist and forester;
-- Young plants, with spiny margin leaves, may be confused with
Q.turbinella, but the latter has 10-40 mm long acorn stalk, and leaves with some tufts of flattened hairs beneath;

Subspecies and