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Quercus ilicifolia is a deciduous tree or shrub growing occasionally reaching a height of 6 meters (20 feet) but usually much smaller. [ 4 ] [ 5 ] It is gangly and can form a dense thicket . The plant grows from a large taproot , which reach 20 centimeters (8 inches) in thickness.
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
Coahuila scrub oak (Quercus intricata), in the US, it is reported at only two sites: One in the Chisos Mountains inside Big Bend National Park, and the other 15 miles SW of Van Horn. Gambel oak (Quercus gambelii) [note 1] Gray oak (Quercus grisea), in the mountains of the southwestern United States and northern Mexico. Emory oak (Quercus emoryi)
The only documented larval food plant of this species is Quercus ilicifolia, though it is possible that it might use Vaccinium species, particularly Vaccinium angustifolium. [ 3 ] References
List of plants endemic to the Appalachian Mountains * ... Quercus ilicifolia; Quercus montana; Quercus prinoides; R. Rhamnus alnifolia; Rhododendron calendulaceum;
"Plant bugs of Quercus ilicifolia: myriads of mirids (Heteroptera) in pitch pine-scrub oak barrens". Journal of the New York Entomological Society . 99 (3): 405–440.
These forests have a patchy or open aspect. Pitch pine (Pinus rigida) and Virginia pine (Pinus virginiana) are common within their respective ranges.These pines are often mixed with dry-site oaks such as chestnut oak (Quercus prinus), bear oak (Quercus ilicifolia), northern red oak (Quercus rubra), and scarlet oak (Quercus coccinea).
This page alphabetically lists some known plant species occurring in the US state of Pennsylvania. Currently about 2,100 native and 1,300 non-native plant species are known in Pennsylvania. [ 1 ] According Pennsylvania Department of Conservation and Natural Resources, the known species make up 37% of Pennsylvania's total wild plant flora.