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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.
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.
Quercus baloot, the holm oak or holly oak is a rare species of oak that was described by Griffith in 1848. It is classified in subgenus Cerris and section Ilex . [ 2 ] It is native to the Himalayas from 1,000–3,000 metres (3,300–9,800 ft).
The populations of two tree species (European Beech, Fagus sylvatica; and Holm Oak, Quercus ilex) were evaluated in their dynamics over elevations through time. Generally, Holm Oak reside lower on mountain slopes than does European Beech. In the past fifty years an increase in temperature of 1.5 °C was seen in the tested mountain range.
Quercus ilex subsp. rotundifolia (Lam.) O.Schwarz ex Tab.Morais Quercus rotundifolia , the holm oak or ballota oak , [ 4 ] is an evergreen oak native to the western Mediterranean region , with the majority of the population in the Iberian Peninsula and minor populations in Northwest Africa.
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
Fagus sylvatica, Quercus pubescens, Taxus baccata, Ilex aquifolium, Tilia cordata, maple and Quercus ilex: France: Réserve Biologique Intégrale de la Sylve d’Argenson 2,579 hectares (6,370 acres) Temperate broadleaf and mixed forest: Fagus sylvatica, Quercus petraea and Quercus robur: France: Réserve Biologique Intégrale de Saint-Pé-de ...
Quercus alba: 1947 [11] Delaware: American holly: Ilex opaca: 1939 [12] District of Columbia: Scarlet oak: Quercus coccinea: 1960 [13] Florida: Sabal palm: Sabal palmetto: 1953 [14] Georgia: Southern live oak: Quercus virginiana: 1937 [15] [16] Guam: Ifit (Pacific teak) Intsia bijuga: 1969 [17] Hawaii: Candlenut tree (kukui) Aleurites ...