Quercus acutifolia Née

Mexico (Chiapas, Guerrero, Jalisco, Mexico, Michoacan, Oaxaca); Guatemala; 400-2400 m;

3 to 30 m; generally 10 m; trunk to 0.5 m in diameter;

5-10 (-20) x 2-6 cm; deciduous; thickly leathery; broadly lanceolate to oblanceolate or elliptic-ovate (no more than 4 times longer than wide); apex pointed to acuminate, bristle-tipped; base rounded or subcordate or attenuate; margin mostly entire, thickenned, revolute; dark olive green, glabrous, slightly lustrous above; almost hairless beneath with golden glandular hairs, sometimes axil tufts of stellate, tangled trichomes ; young leaves pinkish, pubescent adaxially and much more abaxially, with stellate and amber glandular trichomes; 7-10 veins pairs, straight or slightly curved, flat or impressed adaxially, raised beneath; midrib raised abaxially; epidermis papillose ; petiole glabrescent 0.8-1.5 cm;

male catkins 4-11 cm long, pubescent, with 20-50 flowers, from February to March; pistillate ones 0.6-2 cm, 1 to 4-flowered;

acorn ovoid 1-1,9 cm, glabrescent, with thin pericarp; singly or to 4 on a stout peduncle 2-20 mm long; cup half-round, with rim mostly rolled under, with pubescent, flat scales, covering 1/3 or 1/2 of nut; maturing in 2 years (from June to February);

– Sub-genus Quercus, section Lobatae, sub-section Erythromexicanae, Seris Acutifoliae; – This species was formerly named Q. conspersa Benth. 1842, but S. Valencia- A. showed in 2015 that Née, in 1801, reversed the descriptions and the types of 2 of his taxa : his description of Q. acutifolia was actually the one of Q. conspersa , so the name “ conspersa “ becomes a simple synonym; moreover, the type he designed for the species he named “ acutifolia “ was in fact the one of Q. grahamii ; – Threatened (IUCN Red List Category : VU) – For S. Valencia- A. Q. correpta is a synonym of Q. sapotifolia ;