Fernbush - Chamaebatiaria millefolium (Torr.) Maxim. - the only species in its genus, is endemic to the Great Basin, Colorado Plateau, and adjacent areas of the western United States. It is an upright, generally multistemmed, sweetly aromatic shrub 0.3 to 2 m tall. Bark of young branches is brown and becomes smooth and gray with age. Leaves are leathery, alternate, simple, bipinnatisect, stipulate, and more or less clustered near the ends of the branches. Foliage and young branches are viscid and pubescent, with simple and stellate hairs that are sharp-pointed or glandular-capitate. Southern populations are more or less evergreen (Phillips 1949), whereas northern populations are largely deciduous, retaining a few leaves near the branch tips through winter and initiating leaf development in early spring (Hitchcock and others 1961; Kirkwood 1930).
Shaw, Nancy L.; Hurd, Emerenciana G. 2008. Chamaebatiaria millefolium (Torr.) Maxim.: fernbush. In: Bonner, Franklin T.; Karrfalt, Robert P., eds. The Woody Plant Seed Manual. Agric. Handbook No. 727. Washington, DC. U.S. Department of Agriculture, Forest Service. p. 387-390.