| Quercus havardii | |
| Author | Rydb. 1901 |
| Synonyms | |
| Local names | Havard’s
oak ; sand shinnery oak ; Havard ‘s shinnery oak ; shin oak ; |
| Range | Southeastern
New-Mexico; northwestern Texas; W. Oklahoma; 500-2000 m; |
| Growth habit | 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 | 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; |
| Flowers | in April; 8 stamens; |
| Fruits | 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; |
|
Bark, twigs and | bark
pale grey, slightly furrowed; young shoots tomentose, becoming glabrous in 2 years,
sometimes red brown; bud dark brown, subglobose, slightly pubescent, 2 mm long;
|
| Hardiness zone, habitat | hardy
in zone 7; occurs in sand dunes; |
| Miscellaneous | --
A. Camus n° 259; -- section Quercus; -- hybridizes with Q.pungens which it resembles a lot, and with Q.stellata; |
| Subspecies
and varieties |
---
var. tuckeri S.L Welsh 1986 it is probably a hybrid with Q.gambelii and Q.turbinella |
| Pictures |
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