Quercus × macdonaldii,[1][3][4] formerly Quercus macdonaldii, with the common names MacDonald's oak and Macdonald oak, is a rare hybrid species of oak in the family Fagaceae.[1]
The tree is endemic to the California Channel Islands, on Santa Cruz Island, Santa Rosa Island, and Santa Catalina Island, in Southern California.[3] It is found in chaparral and woodlands habitats in canyons and slopes below 600 metres (2,000 ft).[3]
The plant was reclassified as Quercus × macdonaldii, a naturally occurring hybrid of Quercus lobata and Quercus pacifica, or possibly other oak species.[3][4][5] Both parents are placed in section Quercus.[6]
Distribution map for Quercus × macdonaldii,Quercus × macdonaldii, formerly Quercus macdonaldii, with the common names MacDonald's oak and Macdonald oak, is a rare hybrid species of oak in the family Fagaceae.
