General: Burrobrush (Hymenoclea salsola), or Cheeseweed, is an upright, spreading shrub with many thin stems that bend down to the ground and narrow, threadlike leaves. The common name Cheeseweed comes from the pungent odor of the crushed leaves.

Burrobrush is a common component of shrub communities along washes and on desert flats, bajadas, and lower montane slopes in the Upper Sonoran (Mojave Desert Scrub and Pinyon-Juniper Woodland) life zone.

Family: Sunflower (Asteraceae).

Other Names: Cheeseweed, cheesebush, white burrobush, Ambrosia salsola.

Plant Form: Upright shrub or spreading with thin twigs.

Height: Usually knee to thigh-high; to 6-feet tall.

Bark: Green, aging to tan.

Stems: Thin, upright, arising from a single base, branched throughout, often arching out and bending down to the ground.

Leaves: Leaves alternate, entire, short, threadlike, dark green. Pungent odor when crushed.

Flowers: In separate staminate and pistillate heads. Staminate heads: many, in spiked clusters. Pistillate heads: individual flowers, beaked; fruit winged.

Seeds: Enclosed in winged bur.

Habitat: Dry, well-drained sandy, gravelly, and rocky soils on desert flats, washes, bajadas, and moderate slopes in the lower mountains.

Elevation: To about 6,000 feet.

Distribution: California to southwestern Utah and Arizona, south into northwestern Mexico.

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