Eriogonum fasciculatum has a bioregional distribution that stretches from California (including the southern Sierra Nevada, central western California, southwestern California, east of Sierra Nevada and Desert) to Utah, Arizona and northwest Mexico. Elevations of occurrence are below 2300 meters. This relatively common plant occurs on dry slopes, washes and canyons in scrub plant associations.

Commonly termed Eastern Mojave buckwheat, this shrub attains a height of ten to 200 cm, with leaves that are cauline and clustered at nodes; leaf blades are six to 18 mm, linear to oblanceolate, leathery, and more or less rolled under. Inflorescences are in the form of heads or umbels, generally canescent