Species

Quercus hypoleucoides A.Camus

LC

Known Hybrids (1)

Synonyms (2)

confertifolia Torr. hypoleuca Engelm.
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Data from Oaks of the World

Geographic 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, ar istate; 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;

Common Names

whiteleaf oak silverleaf oak

Hardiness & Habitat

not quite hardy (zone 7-8); wet mixed forests; prefers wet canyons; all types of soils;

Additional Information

– A. Camus : n° 300; – Sub-genus Quercus, section Lobatae; – Rare; – Hybrids with Q.gravesi i ( = 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

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