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Quercus ilex, the holm oak, [2] [3] also (ambiguously, as many oaks are evergreen) evergreen oak, [4] is a large evergreen oak native to the Mediterranean region. It is a member of the section Ilex of the genus, [ 5 ] [ 6 ] with acorns that mature in a single summer.
Forests include Quercus suber, Pinus pinaster, Quercus pubescens and Castanea sativa too. Supramediterranean vegetation belt, 500– 700 m up to 900- 1,000 m (northern slopes), or 800- 1,000 m to 1,200- 1,350 m (southern slopes); Erica arborea, Quercus ilex, Quercus petraea, Pinus nigra ssp. laricio, Alnus cordata, Ilex aquifolium, Taxus ...
The genus Quercus contains about 500 known species, plus about 180 hybrids between them. [1] The genus, as is the case with many large genera, is divided into subgenera and sections. Traditionally, the genus Quercus was divided into the two subgenera Cyclobalanopsis, the ring-cupped oaks, and Quercus, which included
Quercus sect. Ilex was first established by John Claudius Loudon in 1838. It has also been treated as a subgenus, under the name Quercus subg. Heterobalanus Oerst., and as subsection. Members may be called ilex oaks. [1] Like all species of Quercus, those of section Ilex are trees or shrubs with acorn-like fruit.
An oak is a hardwood tree or shrub in the genus Quercus of the beech family. They have spirally arranged leaves, often with lobed edges, and a nut called an acorn , borne within a cup. The genus is widely distributed in the Northern Hemisphere; it includes some 500 species, both deciduous and evergreen .
Holm oak may refer to: . Quercus ilex, tree native to South and Southeast Europe and parts of France; Quercus rotundifolia, tree native to the Iberian Peninsula and Northwest Africa
Quercus rotundifolia is a medium to large tree, usually 8–12 m (26–39 ft) in height, but can reach up to 15 m (49 ft) with a large, dense, rounded canopy. It has small, leathery, dark-green leaves with a glaucous , densely pubescent underside usually suborbicular to elliptical or lanceolate and are generally spiny to dentate on a younger tree.
Quercus aquifolioides is a species of oak native to south-central China and Tibet. [3] It is in the subgenus Cerris , section Ilex . [ 4 ] It is a shrub or small tree adapted to high elevations.