Abies durangensis var. coahuilensis / Coahuila fir
Abies durangensis var. coahuilensis was first described by (I. M. Johnst.), later by Martinez in 1963.
Description. is described as a tree 60-90 feet (20-30 m) tall, with growth habit resembling a Douglas-fir. It differs from the type in its more densely pubescent shoots, shorter leaves, and small number of stomata on the upper side of the leaves (Farjon 1990).
Distribution. Found only in Mexico, northwestern Coahuila Province. It is a scarce tree of dense coniferous forests with Pinus ayacahuite and others in damp canyons.
Abies durangensis var. coahuilensis -- detail of shoots and needles.
Photo by Chris Earle