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Quercus subgenus Quercus is one of the two subgenera into which the genus Quercus was divided in a 2017 classification (the other being subgenus Cerris). It contains about 190 species divided among five sections .
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.
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
A. Quercus acatenangensis; Quercus acerifolia; Quercus acherdophylla; Acorn; Quercus acrodonta; Quercus aculcingensis; Quercus acuta; Quercus acutangula; Quercus ...
Quercus suber, commonly called the cork oak, is a medium-sized, evergreen oak tree in the section Quercus sect. Cerris. It is the primary source of cork for wine bottle stoppers and other uses, such as cork flooring and as the cores of cricket balls .
Quercus subsericea [2] is a tree species in the beech family Fagaceae.There are no known subspecies. [3] [4] It is placed in subgenus Cerris, section Cyclobalanopsis.[5]This oak species is an emergent tropical forest tree, growing up to 52 m. tall and 0.86 m. dbh [6] and has been recorded from Malaysia, Indonesia, Philippines ().
Quercus shumardii, the Shumard oak, spotted oak, Schneck oak, Shumard red oak, or swamp red oak, is one of the largest of the oak species in the red oak group (Quercus section Lobatae). It is closely related to Quercus buckleyi (Texas red oak), Quercus texana (Nuttall's red oak), and Quercus gravesii (Chisos red oak).
Quercus sessilifolia is an Asian species of trees in the beech family Fagaceae. It is widespread across Japan, Taiwan, and much of southeastern China (Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangsu, Jiangxi, Sichuan, and Zhejiang provinces). [ 3 ]