Quercus grahamii Benth.

Mexico (Chiapas, Nayarit, Durango, Guerrero, Jalisco, Michoacan, Puebla, 0axaca) from 600 m to 2500 m ; Guatemala; Belize; Honduras;

10-30 m ; trunk from 30 cm to 1 m in diameter;

5-14 cm long, 2-4 cm wide; 3-4 times as long as wide; persistent until next leaves appear; subcoriaceous, stiff; more or less narrowly elliptic or elliptic-lanceolate; apex pointed, sometimes attenuate, bristle-tipped; base rounded or attenuate, often oblique; margin often undulate, entire or more often with 5 to 13 short, bristle-tipped teeth on each margin, sometimes only on apical 2/3; mature leaves shiny above, glabrous or with trichomes along midrib; paler underneath, glabrous or sometimes with axil tufts of stellate hairs, without glandular hairs; 5-13 straight veins pairs flat adaxially, slightly raised beneath; epidermis smooth, not papillose; 0.9-2 cm long, glabrous petiole;

from January to April; male catkins 7-13 cm long, hairless, with 10-35 flowers; pistillate ones 0.5-2 cm long, 1 to 5-flowered;

acorn 1-1.9 cm long, glabrescent, with thin pericarp; singly or paired, sessile or on a very short peduncle, ovoid; enclosed for 1/3 or 1/2 of length in a shallow cup with straight rim, covered with smooth, appressed, tomentose scales; maturing in 2 years;

a little tender, but withstands -15°C;

– A. Camus : n° 307; – Sub-genus Quercus, Section Lobatae, Subsection Erythromexicanae, Group Acutifoliae; – For Susana Valencia-A. 2015, Q. grahamii Benth. is from now on the name to be assigned to this species formerly named Q. acutifolia , the term ’ acutifolia ’ being proposed to replace the name Q. conspersa (which becomes a simple synonym, see Q. acutifolia ).