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Quercus rysophylla | |
Author | Weath. 1910 Proc. Amer. Acad. Arts 45: 423 |
Synonyms | |
Local names | Loquat leaf oak; Monterrey oak; |
Range | Mexico (Nuevo
Leon, Tamaulipas, San Luis Potosi, Hidalgo, Queretaro, Veracruz); |
Growth habit | tall tree reaching
25 m; |
Leaves | 8-18 cm x 3-7;
thick, leathery, very rough; elliptic to lanceolate, seldom oboval; apex
acute, bristle-tipped, often shortly acuminate; base subcordate; margin
slightly révolute, cartilaginous, flat or crispate, entire or with
2-4 pairs of bristle-tipped teeth in the apical half, sometimes on one
side only; dark green above, lustrous, hairless except some stellate and
glandular trichomes on veins; paler, hairless beneath, except some axillary
tufts and some scattered stipitate fascicled hairs along midrib; 10-17
pairs of secondary veins raised beneath, impressed above; tertiary veins
conspicuous on both sides, essentially beneath; epidermis papillose; petiole
2-6 mm long, glabrescent; |
Flowers | female catkins 1 cm long with 1-4 pubescent flowers, or more; |
Fruits |
acorn ovoid, pointed, 1.5-2 cm long; singly or paired, or more on a stout, short peduncle 2 mm long; cup enclosing 1/3 to 1/2 of the nut; maturing in 2 years in September-October; |
Bark, twigs and |
dark grey bark, deeply furrowed; twig 2-5 mm thick, sulcate, glabrescent, with small light inconspicuous lenticels; bud ovoid or conical 4-5 mm long, with pubescent, deciduous stipules; |
Hardiness zone, habitat | hardy (withstands - 17°C); fast growing; prefers lime-free soils and full sun; |
Miscellaneous | -- A. Camus : n° 318; -- Sub-genus Quercus, section Lobatae, Series Erythromexicanae, Group Rysophyllae; -- Also written "rhysophylla"; |
Subspecies and varieties |
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