Quercus havardii Rydb.

Southeastern New-Mexico; northwestern Texas; W. Oklahoma; 500-2000 m;

0,5-2 m; often forming a spreading bush (to 15 m wide), multiple trunks (to 60 or more) by layering in the sandy soil;

2.5-7.5 x 1.2-5.5 cm ; elliptic to lanceolate; leathery; apex pointed sometimes truncate; base rounded to cuneate; margin entire or coarsely dentate, often wavy; adaxially slightly hairy, dull green; abaxially densely hairy, with 8-13 rayed stellate hairs; 5-8 vein pairs; petiole pubescent to 7 mm;

in April; 8 stamens;

large acorn 1.5-2.5 cm long; singly or paired; subsessile, or shortly stalked; enclosed 1/3-1/2 by cup; cup deep, densely tomentose inside, with warty scales basally thick; maturing in 1 year; edible;

hardy in zone 7; occurs in sand dunes;

– A. Camus n° 259; – Sub-genus Quercus, Section Quercus, Series Stellatae; – Threatened (IUCN Red List Category : EN) – Hybridizes with Q.pungens which it resembles a lot, and with Q.stellata ;