| Quercus tuberculata | |
| Author |
Liebm. 1854 Overs. Kongel. Danske Vidensk. Selsk. Forh. Medlemmers Arbeider 1854: 181 Diagnosis here |
| Synonyms | aurantiaca
Trel. 1924 Diagnosis here idonea Goldman 1916 (Camus = n° 198) monterreyensis Trel. & C.H. Mull. 1936 standleyi Trel. 1924 (Camus = n° 207) Diagnosis here tuberculata f. latifolia Martinez 1954 |
| Local names | |
| Range | Mexico
(Aguascalientes, Chihuahua, Coahuila, Durango, Guanajuato, Michoacan,
Nayarit, Sinaloa, Sonora); 900-2000 m ; |
| Growth habit | 6-12
m tall; |
| Leaves |
5-12 (-15) x 3-9 cm; deciduous; oblong, elliptic to oval, or oboval; leathery; apex obtuse to acute, sometimes emarginate; base round to cordate, seldom cuneate, often asymmetrical; margin thickened, slightly revolute, cartilaginous, entire, sometimes wavy-dentate (if teeth, 2-8 pairs of obtuse mucronate teeth); adaxially more or less dark yellowish or olive green, lustrous, glabrous or with some scattered sessile stellate hairs, mainly on veins and base of blade; paler, dull green beneath, glabrous or with some sessile stellate hairs along midvein; 8-10 vein pairs, slightly raised above, prominent abaxially; epidermis smooth, papillose; petiole 2-10 mm long, reddish, pubescent, glabrescent; |
| Flowers | staminate catkins 5-8 cm long with numerous flowers; pistillate inflorescences to 3 cm, with 2-3 flowers; |
| Fruits | acorn
1-2 cm long, 1-1.5 cm in diameter; ovoid or oblong-cylindrical; subsessil
or on a stalk less than 5 mm long; enclosed 1/3 to 1/2 by cup; cup 1.4-1.6
cm in diameter, tomentose, with thick, strongly warty scales; |
|
Bark, twigs and |
bark
thin, grey, scaly; twig thin (1.5-3 mm), reddish, almost glabrous; numerous,
pale, raised lenticels; bud ovoid, sometimes globose, 1-3 mm long, brown,
with slightly tomentose scales; |
| Hardiness zone, habitat | not
quite hardy; |
| Miscellaneous | --
A. Camus : n° 197; -- Sub-genus Quercus, Section Quercus, Series Leucomexicanae; -- Related to Q.glabrescens, which it may be confused with, but Q. glabrescens has 2 cm long male catkins, leaves with shorter petiole and a margin with 3-5 pairs of teeth in the distal half, young twigs thinner, the peduncle of the acorn to 3 cm ; |
| Subspecies and varieties |
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| Pictures |
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