| Quercus hypoleucoides | |
| Author | A.Camus 1932 Bull. Mus. Natl. Hist. Nat. II, 4: 124 |
| Synonyms | confertifolia Torr. in Emory 1859, nom.
illeg., not Bonpl. 1809 hypoleuca Engelm. 1876, nom. illeg., not hypoleuca Miq. 1858 |
| Local names | whiteleaf
oak ; silverleaf oak ; |
| Range | Mexico (Chihuahua,
Coahuila, Durango); South-East Arizona; New-Mexico ("Copper Mines"); Texas;
1100-2700 m; |
| Growth habit | may reach 10-20
m; but more often shrubby, 2 to 5 m; branches slender, ascendant; |
| Leaves |
5-10 x 1.5-3 cm; evergreen;
lanceolate; leathery; apex pointed, aristate; base
rounded or cuneate; margin thick, rolled under, entire or , sometimes
with 1-3 pairs of aristate teeth; more or less dark green above, with
simple and stalkless stellate hairs scattered, glabrescent; densely
whitish or yellowish tomentose beneath with stalkless, stellate hairs
and golden glandular ones, all tangled; midrib prominent below; 9-12
veins pairs slightly impressed adaxially, prominent beneath; epidermis
bullate and papillose; petiole glabrescent 3-11 mm long; |
| Flowers | in February-March;
male catkins 3-6 cm long, hairy, with numerous flowers; female ones 10
cm long, with only 1 or 2 pubescent flowers; |
| Fruits | acorn 1-1.2 cm long; singly or paired; short peduncle 2-5 mm; cup enclosing 1/3 of nut, scaly, tomentose inside and outside; cup scales flat ; maturing in 1 or 2 years; |
|
Bark, twigs and |
bark
black, at first smooth, then ridged and deeply sulcate; young twigs dark
red brown, densely tomentose, 1.5-3 mm in diameter; bud brown, ovoid,
mostly glabrous, 2-3 mm long; |
| Hardiness zone, habitat | not quite hardy (zone 7-8); wet mixed forests; prefers wet canyons; all types of soils; |
| Miscellaneous | --
A. Camus : n° 300; -- Sub-genus Quercus, section Lobatae; -- Rare; -- Hybrids with Q.gravesii ( = Q.x inconstans Palmer) and with Q.shumardii; -- Q. confertifolia Bonpl. 1809 is the new name for Q. gentryi -- Q. hypoleuca Miq. 1858 is actually a synonym for Lithocarpus korthalsii Soepadmo |
| Subspecies and varieties |
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| Pictures |
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