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Atriplex canescens, Four-wing Salt Bush
Scientific Name:Atriplex canescens Common Name: Four-wing Salt Bush
Also Called: Fourwing Saltbush, Four wing Saltbush, Four-wing Saltbush, Hoary Saltbush, Shadscale, Wing-scale; (Spanish Cenzio, Chamiso)
Family:Chenopodiaceae, Goosefoot Family (now as sub-family Chenopodioideae in the Amaranthaceae Family). Synonyms: (Obione berlandieri, Obione canescens, Pterochiton occidentale)
Status:Native Duration:Perennial Size: Up to 6 feet or more (7') and as wide or wider.
Growth Form:Shrub; erect; plants not thorny or otherwise armed.
Leaves: Green; silver-gray-green; covered with a silvery pubescence leaves are mostly persistent; alternate; mostly sessile; leaf shape variable, linear to oblanceolate, oblong or obovate particularly by variety; leaf marginsentire.
Flower Color: Inconspicuous, tiny yellow or brown; male flowers in terminalpanicles; female flowers in short terminalspikes; mostly dioecious (male and female flowers on separate plants); fruits with 4 prominent papery wings.
Flowering Season: April to October; variable by variety.
Elevation: 100 to 6,500 feet; elevations variable by variety.
Recorded Range: Four-wing Salt Bush is a common shrub west of the Mississippi River and extends to Alberta, Canada: AZ, CA, CO, ID, KS, MT, ND, NE, NM, NV, OK, OR, SD, TX, UT, WA, WY. It is also native to Baja California and northern and central Mexico.
U.S. Weed Information: No information available.
Invasive/Noxious Weed Information: No information available.
Wetland Indicator: No information available.
Threatened/Endangered Information:Atriplex canescens var. gigantea or Giant Four-wing Saltbush, is a rare variety of a common species. It is listed in the Center for Plant Conservation National Collection of Endangered Plants.
Genus Information: In North America there are over 50 species for Atriplex. Worldwide, The Plant List includes 258 accepted species names and a further 350 of infraspecific rank for the genus.
In the Southwestern United States: Arizona has 26 species of Atriplex, California has 51 species, Nevada has 27 species, New Mexico has 21 species, Texas has 21 species, Utah has 35 species. All data is approximate and subject to taxonomic changes.
There are 6 varieties in Atriplex canescens:
Atriplex canescens var. angustifolia, Fourwing Saltbush, (AZ, CA);
Atriplex canescens var. canescens, Fourwing Saltbush, (W½ US and AB Can.);
Atriplex canescens var. gigantea; Fourwing Saltbush, (UT);
Atriplex canescens var. laciniata, Fourwing Saltbush, (CA);
Atriplex canescens var. linearis, Thinleaf Fourwing Saltbush, (AZ, CA);
Atriplex canescens var. macilenta, Fourwing Saltbush, (CA).
Comments: Four-wing Salt Bush is highly variable with 6 varieties across its large western United States range. Additionally this species is known to hybridize with Atriplex confertifolia and Atriplex gardneri.
Atriplex canescens provides excellent habitat for small ground birds, particularly quail and is a favorite browse for wildlife and livestock including goats and sheep.