Oaks of the World

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  Quercus rubramenta
Author Trel. 1934 Repert. Spec. Nov. Regni Veg. 33: 318
Local names
Range Mexico (Guerrero, in the Sierra Madre del Sur); 2200-2950 m;
Growth habit 25-40 m; trunk to 1 m in diameter;
Leaves 10-25 cm X 3-8; deciduous; leathery; ovate lanceolate to elliptic; apex pointed, acuminate; base rounded or attenuate; margin entire, thick, slightly wavy, with sometimes 1 or 2 pairs of bristle-tipped teeth near apex; glabrous on both sides, with sometimes axil tufts beneath; 11-24 vein pairs, adaxially raised or not, raised underneath; petiole becoming soon glabrous, 2-5 mm long;
Flowers from February to April ; male catkins 5-12 cm long; pistillate ones 1.5-2 cm, usually 3-flowered;
Fruits acorn 1-1.8 cm long, oblong-ellipsoid, pubescent, singly or to 3 together, stalkless on a 1-3 cm long peduncle; cup halfround to slightly conical, silky inside, with lanceolate scales, enclosing 1/3 to 1/2 of nut; maturing in 1 year, from June to August;

Bark, twigs and

twig 2-4 mm thick, greyish to tawny, with pale, inconspicuous pale lenticels; bud lanceolate-ovoid, 2-10 mm long X 2-4 mm wide, yellowish at apex, with lanceolate, silky scales ciliate along margin; stipules deciduous when leaves are mature, glabrescent, 5-15 mm long;
Hardiness zone, habitat
Miscellaneous -- A. Camus = n° 363;
-- Sub-genus Quercus, section Lobatae, Series Erythromexicanae, Group Benthamiae;
-- Threatened (IUCN Red List Category : VU).
-- Frequently considered as synonym of Q. salicifolia
-- For Zavala-Chavez, 2003, it is a variety of Q.conspersa.

Subspecies and