Galium muricatum, Humboldt bedstraw, is a species of plants in the Rubiaceae. It is native to northwestern California (Sonoma, Mendocino, Humboldt, Trinity and Siskiyou Counties) and southeastern Oregon (Curry, Josephine, Jackson, and Coos Counties). Galium muricatum is a perennial herb with white flowers, spreading vegetatively to form sizable colonies. Leaves are in whorls of 4, elliptical, tapering at the tip.