Alnus jorullensis, commonly known as Mexican alder, is an evergreen or semi-evergreen alder, native to eastern and southern Mexico, Guatemala, and Honduras. Although previously reported from the Andes, further collections showed these to be the similar species A. acuminata, commonly found in South America.
Range and habitat
Alnus jorullensis grows in high-elevation forests in Mexico's Sierra Madre Occidental, Sierra Madre Oriental and Sierra Madre del Sur, and in the highlands of Honduras, from 2,800 to 3,800 meters elevation. It is the most common alder in Mexico's mountains, and grows at the highest elevations. Guatemalan populations identified as A. jorullensis may be A. acuminata, and its presence in Guatemala is uncertain.