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Quercus cerris, the Turkey oak or Austrian oak, [3] [4] is an oak native to south-eastern Europe and Asia Minor.It is the type species of Quercus sect. Cerris, a section of the genus characterised by shoot buds surrounded by soft bristles, bristle-tipped leaf lobes, and acorns that usually mature in 18 months.
Like all species of Quercus, those of subgenus Cerris are trees or shrubs with acorn-like fruit in which a cup covers at least the base of the nut.Members of subgenus Cerris are distinguished from members of subgenus Quercus by few morphological features, their separation being largely determined by molecular phylogenetic evidence.
Section Quercus – white oaks from North America and Eurasia; Subgenus Cerris Oerst. – the Old World clade (or mid-latitude clade), exclusively native to Eurasia Section Cyclobalanopsis Oerst. – cycle-cup oaks of East Asia; Section Cerris Dumort. – cerris oaks of subtropical and temperate Eurasia and North 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
Andricus quercuscalicis (Burgsdorf, 1783) (Hymenoptera: Cynipidae) [7] is a small gall wasp with an obligate two-phase life-cycle that requires both pedunculate oak (Q. robur L.) (or occasionally sessile oak Q.petraea L.) [3] and Turkey oak (Quercus cerris L.). Therefore, as with most oak gall wasps, this species has alternate sexual and ...
Quercus suber is a species of the section Cerris to which, for example, the following species also belong: Valonia oak (Quercus macrolepis) Turkey oak (Quercus cerris) Quercus × crenata; Macedonian oak (Quercus trojana) Characteristic for the section are the hairless pericarp and the usually two-year ripening time of the fruits. The cork oak ...
The wasp causes the formation of a round gall, where the larvae develop until they are ready to emerge as asexual females. Through parthenogenesis, these asexual females produce unfertilised eggs that are deposited on the buds of Quercus suber in Andricus hispanicus, or Quercus cerris in Andricus kollari.
Quercus look is the southernmost representative of mountainous deciduous oaks in the Middle East, occurring in mountain ranges of the Levant, Mount Hermon in particular. It grows at altitudes between 1400 and 1900 m in mixed stands with fellow sect. Cerris species Tabor oak (Quercus ithaburensis) and Lebanon oak (Quercus libani) as well as the Lebanon cedar (Cedrus libani), the Aleppo oak ...