Western Cottonwood (LA Urban Forest Program)

Western Cottonwood

Populus fremontii

Summary ⁸

Populus fremontii, the Fremont cottonwood or Alamo cottonwood, is a cottonwood (and thus a poplar) native to riparian zones of the Southwestern United States and far northern Mexico. The tree grows near streams, rivers, springs, wetlands, and well-watered alluvial bottomlands at elevations below 2,000 m (6,600 ft) elevation.

Common names ⁹

Fremont cottonwood

Arizona cottonwood

Alamo cottonwood

Description ¹⁰

Willow Family (Salicaceae). Fremont’s cottonwood is a native tree growing in riparian areas near streams, rivers and wetlands in the American Southwest. Fremont's cottonwood trees range from 12 to 35 meters in height, and trunk diameter ranges from 0.30 to 1.5 meters. The bark is smooth in younger trees, becoming deeply furrowed with whitish cracked bark with age. The leaves are cordate (heart-shaped) with white veins and coarse crenate-serrate teeth on the margins. The leaves have petioles 1/2 to equal the blade length, laterally compressed near the blade which causes the leaves to flutter in the wind. These trees are dioecious, with flowers in drooping catkins, which are 4 to 14 cm long. Cottonwoods bloom from March-April. The fruit is an achene, which is attached to a silky hair, en masse looking like patches of cotton hanging from the limbs, thus the name cottonwood. The seeds are wind dispersed.

Fuentes y créditos

(c) Lee Parmerter, algunos derechos reservados (CC BY-NC), subido por Lee Parmerter
(c) Zack Abbey, algunos derechos reservados (CC BY), subido por Zack Abbey
(c) Charles Webber, algunos derechos reservados (CC BY-NC-SA), https://calphotos.berkeley.edu/imgs/512x768/8120_3181/4567/0090.jpeg
(c) 2002 California Academy of Sciences, algunos derechos reservados (CC BY-NC-SA), https://calphotos.berkeley.edu/imgs/512x768/1335_3153/0216/0050.jpeg
(c) 1998 California Academy of Sciences, algunos derechos reservados (CC BY-NC-SA), https://calphotos.berkeley.edu/imgs/512x768/8120_3181/4573/0080.jpeg
(c) 2007 California Academy of Sciences, algunos derechos reservados (CC BY-NC-SA), http://calphotos.berkeley.edu/cgi/img_query?seq_num=221348&one=T
(c) homeredwardprice, algunos derechos reservados (CC BY), http://farm3.static.flickr.com/2746/4522095922_4669fbe6b3.jpg
Adaptado por earthwatchtrees del trabajo de (c) Wikipedia, algunos derechos reservados (CC BY-SA), http://en.wikipedia.org/wiki/Populus_fremontii
Dominio Publico, http://eol.org/data_objects/24103480
(c) USDA NRCS National Plant Data Center & New Mexico Plant Materials Center, algunos derechos reservados (CC BY-SA), http://eol.org/data_objects/1391553