Quercus buckleyi Nixon & Dorr

Texas (Edwards Plateau), Oklahoma; 150 -500 m; area much more limited than for the neighbouring Q. shumardii ;

reaches 15 m tall;

5-10 x 5-11 cm; broadly elliptic to obovate or almost orbicular; apex acute to acuminate, ; base cuneate, often asymmetrical; margin with 5-9 deep, triangular lobes; sinuses much more deep and rounded than those of Q.shumardii ; dark green, hairless, bright above; paler beneath with sometimes rusty axil tufts; 3-5 vein pairs raised on both surfaces; petiole 2-4 cm, glabrous;

in spring;

acorn broadly ovoid to broadly ellipsoid, seldom oblong,1.2-1.8 cm long, 0.8-1.4 cm wide, with ringed stylopodium; subsessile; usually not striate; enclosed 1/3 or 1/2 by the cup; cup goblet- to cup-shaped with pointed, appressed, glabrous, sometimes tuberculate scales at base of cup; cup glabrous inside, except a few hairs on the scar; maturing in 2 years;

hardy zone 6; requires dry and calcareous soils;

– A. Camus n° 295; – Sub-genus Quercus, section Lobatae, Series Coccineae; – Closely related to Q.shumardii – This species was erroneously named Q.texana , Q.rubra var. texana , Q.shumardii var. texana , while the true Q.texana is Q.nuttallii;