Oaks of the World

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  Quercus oleoides
Author Schltdl. & Cham. 1830
Synonyms virens A.DC pro parte
lutescens Mart. & Gal. 1843 .
oleoides fo. lutescens (Mart. & Gal. ) Trel. 1924
oloides var. australis Trel.1924   (A. Camus : 171)
retusa Liebm. 1854
Local names encino tesmosl; tresmoles; encino negro; roblecito; hojaviushi;
Range Mexico (Vera Cruz, Chiapas, Oaxaca, Queretaro, San Luis Potosi, Tamaulipas, Tabasco, Puebla); Central America (Costa Rica, Belize, Guatemala, Honduras, Nicaragua); Texas; 150-1100 m;
Growth habit 5-10 m tall usually, but may reach 15 m, with trunk 50-70 cm in diameter; sometimes shrub 1-3 m tall; crown dense, branched; cylindrical trunk;
Leaves 4-12 x 3-6 cm; deciduous; broadly elliptic or oboval; leathery; apex acute or obtuse, mucronate; base attenuate, sometimes slightly cuneate; margin thickened, slightly revolute, entire or sometimes with 16 pairs of mucronate teeth in apical half (leaves of young plants are likely dentate); greyish green, slightly lustrous above, hairless or with stellate, sessile trichomes at base of veins; yellowish grey beneath, densely covered with stellate, appressed, short trichomes, and other longer trichomes on veins; 5-8 vein pairs, impressed beneath, raised above; épidermis papillose; petiole 3-8 mm long, yellowish, pubescent;
Flowers March to May; staminate inflorescences glabrous, 2-4 cm long; pistillate inflorescences 2-4 cm, bearing 2-3 flowers;
Fruits acorn 2.5-3 cm long, 1-1.2 cm in diameter; broadly elliptic, mucronate; shiny dark brown at maturity( pale green when young); hairless; peduncle 0.5-1.3 cm; enclosed 1/3 by cup; cup turbinate 1-1.5 cm in diameter, with free tomentose scales; maturing in 1 or 2 years, from July to October;

Bark, twigs and
buds

bark dark grey brown, thick, rough; twigs densely tomentose at first, becoming hairless, yellowish, with pale lenticels; buds subglobose or ovoidl, 1.5-3 mm;
Hardiness zone, habitat not hardy; fire-resistant; prefers hot, dry soils; not very fast-growing;
Miscellaneous -- A. Camus : n 170 ;
-- section Quercus ;
-- close to Q. virginiana;
Subspecies and
varieties
-- Some authors (C.H. Muller) think that the variety sagraeana of Q.cubana is actually a variety of Q.oleoides.
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