Oaks of the World

General data Classifications List of species Local names Back to
home page

  Quercus revoluta
Author

Trel. 1924 Mem. Natl. Acad. Sci. 20: 78

Diagnosis here

Synonyms revoluta f. dysophyllopsis Trel. 1924
Local names
Range Mexico (Puebla) ;
Growth habit less than 3 m tall;
Leaves 5-6 x 2-4 cm; evergreen; elliptic or oblanceolate-elliptic; apex rounded or obtuse; base rounded, possibly attenuate; margin entire, strongly revolute, sometimes with teeth in the apical half; shiny, hairless above except sometimes on the midrib; densely rusty tomentose beneath; 7-8 pairs of lateral veins impressed above, prominent beneath, at an angle of46-48° with the midrib; epidermis beneath granulous-bullate; petiole 2-4 mm, becoming glabrescent;
Flowers male catkin 3-5 cm, tomentose, with loose flowers; perianth hairy with oval lobes, connate, obtuse; anthers ovoid, hairless; long stamens; female carkin 1-2 cm long with 2-3 flowers; stigmas thick;
Fruits acorn 2 cm long; ovoid; mucronate; enclosed 1/2 by cup; cup halfround, with appressed tomentose scales, 1.5-2 cm in diameter; maturing in 1 year;

Bark, twigs and
buds

twig 3 mm long, sulcate, tomentose then glabrous; bus brown, shiny;
Hardiness zone, habitat not hardy;
Miscellaneous -- A. Camus : tome 2, p. 647, n° 249 ;
-- Sub-genus Quercus, Section Quercus, Series Leucomexicanae
-- For S. Valencia-A. 2004, as for Govaerts 2007, it is a synonym of Q. repanda Bonpl.

Subspecies and
varieties
--- fo. acuta Trel. 1936 ; Nuevo Leon ;
Pictures