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Littleleaf Horsebrush
Tetradymia glabrata
About Littleleaf Horsebrush (Tetradymia glabrata) 0 Nurseries Carry This Plant Tetradymia glabrata is a species of flowering plant in the aster family known by the common name littleleaf horsebrush. It is native to the western United States, especially the Great Basin and Mojave Desert. Its habitat includes sagebrush, woodlands, and scrub. It is an erect, bushy shrub growing to a maximum height over one meter, its stems coated unevenly in white woolly fibers with many bare strips. The narrow, pointed leaves are usually no more than a centimeter long and most occur in clusters along the branches. The inflorescence bears up to seven flower heads which are each enveloped in four woolly phyllaries. Each head contains four yellow cream flowers each around a centimeter long. The fruit is a hairy, ribbed achene with a pappus of bristles. This species is the most toxic of the horsebrushes; it and spineless horsebrush (Tetradymia canescens) commonly cause illness and mortality in sheep due to the presence of furanoeremophilanes and other substances. It is especially toxic when consumed along with the black sagebrush (Artemisia nova).
Plant Description
Plant Type
Plant Type

1 - 12 ft tall


Growth Rate
Growth Rate

Flower Color
Flower Color

Flowering Season
Flowering Season

Wildlife Supported

Butterflies & moths hosted ( 1 confirmed ) SHOW ALL
Hemileuca burnsi Image
Hemileuca burnsiHemileuca burnsi

Landscaping Information
Soil Description
Soil Description
Prefers sandy or loamy soils. Does not grow well in clay soils.

Natural Setting
Annual Precipitation: 4.3" - 39.2", Summer Precipitation: 0.26" - 3.20", Coldest Month: 25.6" - 52.0", Hottest Month: 47.3" - 80.2", Humidity: 1.03" - 32.91", Elevation: 2079" - 10080"

Alternative Names
Common Names: Smooth Horsebrush

Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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