Quercus breviloba

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Shallow-lobed oak
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Rosids
Order: Fagales
Family: Fagaceae
Genus: Quercus
Section: Quercus
Species: Q. breviloba
Binomial name
Quercus breviloba
(Torr.) Sarg.

Quercus breviloba, commonly referred to as the bastard oak or shallow-lobed oak, is a species of oak tree[1] that grows in parts of the Southern United States and Northeastern Mexico.


Synonymous names for the tree species include Quercus durandii var. breviloba (Torr.) Palmer and Q. sinuata var. breviloba (Torr.) C. H. Mull.[1][2]


The Quercus breviloba tree grows to a height of 12 m, with an 81 cm diameter at breast height and gray flaking bark.[1] Leaves range from 3-8 cm long by 2-4.5 cm wide, with "broadly rounded and bristless" tips.[1] Leaf shapes are "narrowly obovate to oblanceolate or narrowly elliptic".[1] Twigs are glabrous or may have "scattered hairs".[1] Leaf undersides have "numerous minute sessile stelate hairs with horizonatally spreading rays".[1]


Quercus breviloba grows in the states of Oklahoma and Texas,[2][3] and the northern Mexico states of Coahuila, Nuevo León, and Tamaulipas.[3]


  1. ^ a b c d e f g Duncan, Wilbur H.; Marion B. Duncan (1988). Trees of the Southeastern United States. Athens, Georgia: The University of Georgia Press. p. 275. ISBN 0-8203-1469-2. 
  2. ^ a b "PLANTS Profile for Quercus sinuata var. breviloba (bastard oak)". PLANTS database. USDA. Retrieved 2009-07-28. 
  3. ^ a b "Quercus durandii var. breviloba information from NPGS/GRIN". USDA, ARS, National Genetic Resources Program. Germplasm Resources Information Network - (GRIN) [Online Database]. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved 2009-07-28. 

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