| Quercus intricata | |
| Author | Trel. 1922 |
| Synonyms | microphylla var. crispata A.DC. 1864 |
| Local names | intricate
oak ; dwarf oak ; Coahuila scrub oak ; |
| Range | Mexico
(Coahuila, Nuevo Leon, Durango, Zacatecas) ; Texas (Chisos Mount.,
Eagle Mount.) ; from 1500 to 2850 m ; restricted area; |
| Growth habit | 0.5-2
m; evergreen; intricate branches; |
| Leaves | 1-5 x 0.5-3 cm ; evergreen; elliptic, oval-elliptic or elliptic-oblong; very thick, leathery, rough, sometimes convex; apex variable; base rounded; margin slightly wavy, strongly revolute, entire or with 1-3 pairs of short teeth (less than 2 mm long) asymmetrically arranged and not in same number each side; shiny grey green above, glabrous or with stellate and glandular hairs mainly along veins; yellowish grey or silvery tomentose beneath, becoming sometimes glabrescent; 7-10 veins pairs, hairless, impressed adaxially, prominent beneath; petiole 2-5 mm, tomentose; |
| Flowers | spring;
|
| Fruits | acorn globose, 1 cm in diameter; light brown; single or paired; cup subsessile or shortly stalked (to 1.5 cm long), with thickened scales at base, rim straight or sometimes rolled inside, pubescent, covering almost all of nut; maturing in 1 year, from September to December; cotyledons distinct; |
|
Bark, twigs and |
bark
grey, scaly, rough; twig slender, yellowish grey tomentose, becoming dark
brown; bud pubescent at first, rounded, dark brown, 1-1.5 mm long; |
| Hardiness zone, habitat |
hardiness zone : 7; dry, calcareous, rocky soils; |
| Miscellaneous | --
A. Camus : n° 255 ; -- Sub-genus Quercus, Section Quercus ; -- closely related to Mexican species Q.deliquescens Née, which has leaves with longer, symmetrical teeth, in same number each side. -- no hybrid known; |
| Subspecies and varieties | --- For Trelease = f. ovata Trel., f. angusta Trel., f. erratica Trel. ( Mexico) ; |
| Pictures |
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