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Quercus crassifolia | |
Author |
Bonpl. 1809 Pl. Aequinoct. 2: 49 1809 Diagnosis here |
Synonyms | brachystachys Benth. 1842 chicamolensis Trel. 1922 (A. Camus : 306) Diagnosis here errans Trel. 1924 Diagnosis here crassifolia var. errans Trel. felipensis Trel. 1924 Diagnosis here mollis Mart. & Gal. 1843, not Raf. 1838 moreliana Trel. 1924 Diagnosis here miguelitensis Trel. 1924 Diagnosis here orbiculata Trel. 1924 Diagnosis here spinulosa Mart. & Gal. 1843 splendens var. pallidior A.DC 1864 stipularis Humb. & Bonpl. 1809 |
Local names | encino
chicharron ; |
Range | Mexico (Chiapas, Chihuahua, Guerrero, Guanajuato, Hidalgo, Jalisco, Mexico, Michoacan, Oaxaca, Puebla, Querretaro, San Luis Potosi, Tlaxcala, Veracruz and Zacatecas); Guatemala ; 1300 to 2800 m ; introduced in G.B. in 1939 by G. Hinton; |
Growth habit | 10-15
m, often only 2-3 m; trunk to 0.5 m in diameter and more; |
Leaves | 5-15
x 3-7 cm; late deciduous; thick and stiff, coriaceous, rugose above; oboval,
oblong-oboval or elliptic; apex acute, acuminate or obtuse, aristate;
base rounded or subcordate; margin cartilaginous, revolute and wavy, with
3-8 pairs of sharp bristle-tipped teeth mostly at apical 2/3 or sometimes
more, teeth often assymetrical; yellowish green, shiny, rough and glabrous
above except fascicled trichomes along midrib; persistent, woolly, yellowish,
orange or light brown tomentum beneath, made of fascicled hairs 1-1.5
mm long with a stalk 0,2 mm long, easy to remove; 6-12 vein pairs impressed
above, prominent abaxially; bullate and papillose epidermis; |
Flowers | April-May; staminate catkins tomentose, 10 cm long at least, with 30-40 flowers; pistillate flowers 1 to 3, on a very short, tomentose, 5-8 mm long peduncle; |
Fruits | acorn
ovoid 1-1.2 cm; singly or paired; subsessile or short-stalked 3-15 mm;
glabrous, light coffee; enclosed 1/3 by half-round cup; cup with thin,
pubescent, apically rounded scales ; matures in 2 years, in October. |
Bark, twigs and |
bark
fissured into square plates, dark grey-brown; twigs dark tawny, 2-5 mm
thick, becoming glabrescent, with numerous 3 mm long lenticels; bud 3-7
mm, with tomentose scales; |
Hardiness zone, habitat | hardy(zone 7); |
Miscellaneous | --
A. Camus : n° 304; -- Sub-genus Quercus, section Lobatae; Subsection Erythromexicanae, Group Crassifoliae; -- Hybrid with Q. crassipes = Q. x dysophylla Benth. |
Subspecies and varieties |
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