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Oak Compendium ★

Oaks of the World

Common Names

Sand Post Oak

Havards oak, sand shinnery oak, Havard's shinnery oak, shin oak

Geographic Range

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

Growth Habit

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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;

Leaves

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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;

Fruits (Acorns)

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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;

Flowers

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in April; 8 stamens;

Hardiness & Habitat

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hardy in zone 7; occurs in sand dunes;

Additional Information

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– 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 ;