Populus fremontii subsp. mesetae


J. Arnold Arbor. 58: 201, fig. 2B. 1977.

Common names: Plateau cottonwood álamo cimarron
Synonyms: Populus deltoides var. mesetae (Eckenwalder) Cronquist
Treatment appears in FNA Volume 7. Treatment on page 20. Mentioned on page 16.

Plants to 20 m. Branchlets, leaf blades, and petioles usually densely hairy, hairs (soft) yellowish. Neoformed leaves: blade rhombic-ovate, longer than wide, base cuneate or truncate, apex long-acuminate. Capsules 5–8(–10) mm.

Phenology: Flowering Feb–Apr; fruiting Apr–Jun.
Habitat: Stream banks, canyons, seeps, springs, pools, moist soils
Elevation: 800-2400 m


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Tex., Mexico (Chihuahua, Coahuila, Mexico, Nuevo León, Puebla).


Subspecies mesetae forms groves and local patches along major streams, otherwise primarily in arroyos and canyons in foothills, and also is commonly planted near ranches and in towns. It intergrades with subsp. fremontii along a line from southeastern Arizona south along the boundary between Chihuahua and Sonora.

Selected References


Lower Taxa

James E. Eckenwalder +
Eckenwalder +
Plateau cottonwood +  and álamo cimarron +
Tex. +, Mexico (Chihuahua +, Coahuila +, Mexico +, Nuevo León +  and Puebla). +
800-2400 m +
Stream banks, canyons, seeps, springs, pools, moist soils +
Flowering Feb–Apr +  and fruiting Apr–Jun. +
J. Arnold Arbor. +
Illustrated +
Populus deltoides var. mesetae +
Populus fremontii subsp. mesetae +
Populus fremontii +
subspecies +