|University of California, Berkeley|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
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|Family: Fagaceae||View Description||Dichotomous Key|
|Genus: Quercus||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Quercus ilex L.
Habit: Tree to 20 m, evergreen; trunk bark in small plates, gray-black; twigs gray-brown, densely woolly. Leaf: 3--8 cm; petiole 10--25 mm; blade lanceolate to ovate, adaxially glossy dark green, abaxially +- yellow or +- white woolly, base generally rounded, tip acute, margin entire to shallowly spine-toothed. Fruit: cup 7--15 mm wide, 5--7 mm deep, thin, top- or cup-shaped, scales thin, not tubercled; nut 15--25 mm, ovoid to conic-oblong, distally acute to +- obtuse, shell hairy inside at least at tip; mature in year 1.
Ecology: Escaped from cultivation, canyon slopes, washes near developments; Elevation: 50--400 m. Bioregional Distribution: SW; Distribution Outside California: native to Mediterranean. Flowering Time: May--Aug Note: Reportedly established as naturalized at several locations in southern California. Widely grown as an ornamental in California. Hybrids with Quercus robur (Quercus ×turneri Willd.) in cultivation, but evidently not in nature despite occurring together; the two species are distantly related.
eFlora Treatment Author: Thomas J. Rosatti & John M. Tucker
Jepson Online Interchange
Previous taxon: Quercus garryana var. semota
Next taxon: Quercus john-tuckeri
Citation for this treatment: Thomas J. Rosatti & John M. Tucker 2017. Quercus ilex, in Jepson Flora Project (eds.) Jepson eFlora, Revision 2, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=81107, accessed on April 30, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on April 30, 2017.