Oaks of the World

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  Quercus buckleyi
Author Nixon & Dorr 1985
Synonyms texana Young 1873, nom. illeg.
Local names Buckley’s oak; Texas red oak; Texas oak; Texas shumard oak;
Range Texas (Edwards Plateau), Oklahoma; 150 -500 m; area much more limited than for the neighbouring Q. shumardii;
Growth habit reaches 15 m tall;
Leaves 5-10 x 5-11 cm; broadly elliptic to obovate or almost orbicualar; apex pointed, ; base cuneate, often asymmetrical; margin with 5-8 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; petiole 2-4 cm, glabrous;
Flowers  
Fruits acorn ovoid to ellipsoid, 1.2-1.8 cm long, with ringed stylopodium; subsessile; enclosed 1/3 or 1/2 by the cup; cup bowl-shaped with pointed, appressed, glabrous, sometimes tuberculate scales; cup glabrous inside, except a few hairs on the scar; maturing in 2 years;

Bark, twigs and
buds

bark grey and smooth, becoming dark and furrowed; branchlet brown, sometimes yellow grey, glabrous; buds red, hairy, spindle-shaped, 3-7 mm;
Hardiness zone, habitat hardy zone 6; requires dry and calcareous soils;
Miscellaneous -- A. Camus n° 295;
-- section Lobatae;
-- 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;
Subspecies and
varieties
--- var. paludosa Sarg. 1910
--- hybridizes with Q.marilandica (=
Q.x hastingsii)
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