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Quercus intricata | |
Author |
Trel. 1922 Contr. U. S. Natl. Herb. 23: 185 Diagnosis here |
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;
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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, Series Leucomexicanae; -- 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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