Quercus canbyi (Canby oak, Sierra oak), is a North American species of oak tree.
Description Quercus canbyi is a semi-evergreen - evergreen tree,Harrison L. Flint up to tall in cultivation. Although, it can reach up to in the wild in Mexico. It starts as a pyramidal form and then matures into an open irregular shape. It can reach a spread of wide.Howard Garrett
The dark, glossy green leaves are long and have serrated edges. The petioles can have a reddish hue. It blooms in March and the acorns are then seen in August.A. Michael Powell
It has been distinguished from Quercus graciliformis by its twig shape and by producing acorns biennially rather than annually;Jackie M. Poole, William R. Carr and Dana M. Price however , Plants of the World Online regards them as synonymous.
Taxonomy Quercus canbyi was first described by William Trelease in 1924. It is placed in Quercus section Lobatae.
Distribution The species has been found only in Texas and in northeast Mexico.
Conservation Quercus canbyi was assessed in 2016 for the IUCN Red List as "least concern".
Cultivation Quercus canbyi will tolerate most kinds of soils and is used in gardens to provide shade.Howard Garrett
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