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Plant Focus

Quercus peninsularis
A Red Oak (Section Lobatae) endemic to inland ranges of northern Baja California, Mexico

Quercus barrancana Spellenb.: a New Species of Oak from Northwest Mexico

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Allen J. Coombes

Published May 2015 in International Oaks No. 26: 29–32.


In November 2014, Dr. Richard Spellenberg of New Mexico State University described a new species of White Oak from Northwestern Mexico. While exploring the flora of the northern Sierra Madre Oriental, he and his colleagues had been aware of the plants for some time. Previous collections were usually identified as Quercus toumeyi Sarg. or Q. arizonica Sarg., or as intermediates between these species.


Adapted with permission of the author from Spellenberg, R. 2014. Quercus barrancana (Sect. Quercus, White Oaks), a new species from northwestern Mexico. Phytoneuron 2014-105: 1-12. The original article can be accessed at: http://phytoneuron.net/2014Phytoneuron/105PhytoN-Quercusbarrancana.pdf