Flora of North America species comparison

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Populus fremontii subsp. fremontii
Photo is of parent taxon

cottonwood, Fremont cottonwood
Habit Plants to 30 m. Branchlets, leaf blades, and petioles glabrous or glabrate to densely hairy, hairs whitish.
Capsules

(6–)7.5–11 mm.
Neoformed

leaves: blade broadly triangular-ovate, usually about as wide as long, rarely wider, base truncate or cordate, apex short-acuminate.

Populus fremontii subsp. fremontii
Phenology Flowering Feb–May; fruiting Mar–Jun.
Habitat Floodplains, canyons, springs, other moist places
Elevation (-60-)0-1500 (-2200) m ((-200-)0-4900 (-7200) ft)
Distribution
from FNA
AZ; CA; ID; NM; NV; UT; Mexico (Baja California, Baja California Sur, Sonora)
Discussion

Subspecies fremontii is the common cottonwood of southwestern North America west of the Continental Divide. It intergrades with subsp. mesetae along a line from southeastern Arizona south along the border between Chihuahua and Sonora.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 7, p. 20.
Parent taxa Salicaceae > Populus > Populus fremontii
Sibling taxa
P. fremontii subsp. mesetae
Synonyms P. arizonica, P. fremontii var. arizonica, P. fremontii var. macdougalii, P. fremontii var. pubescens, P. fremontii var. thornberi, P. fremontii var. toumeyi, P. macdougalii
Name authority unknown
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Apiaceae, Boraginaceae, and Polemoniaceae.)

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