. Characteristics and hybridization of important intermountain shrubs. Compositae Rocky Mountains; Shrubs Rocky Mountains; Sunflowers Great Basin; Shrubs Great Basin. Figure 41.—A large spread-. ing rabbitbrush (C. linifoliuS/) growing at the Snow Field Station. Distribution and rabbitbrush occurs on plains, valleys, and foot- hills in Colorado, New Mexico, Nevada, and Utah. Overgrazing allows it to greatly in- crease, sometimes forming a subclimax or even climax community (Halls and Clements 1923). species provides cover and browse in areas where it is abundant. C
. Characteristics and hybridization of important intermountain shrubs. Compositae Rocky Mountains; Shrubs Rocky Mountains; Sunflowers Great Basin; Shrubs Great Basin. Figure 41.—A large spread-. ing rabbitbrush (C. linifoliuS/) growing at the Snow Field Station. Distribution and rabbitbrush occurs on plains, valleys, and foot- hills in Colorado, New Mexico, Nevada, and Utah. Overgrazing allows it to greatly in- crease, sometimes forming a subclimax or even climax community (Halls and Clements 1923). species provides cover and browse in areas where it is abundant. Chrysothamnus linifolius Greene (spreading rabbitbrush) Spreading rabbitbrush is a tall, robust shrub up to meters high (fig. 41). Chrysothamnus linifolius spreads underground by lateral roots that form adventitious shoots (fig. 42) (Anderson 1964). In the genus, only C. parryi shares the underground spreading trait and then not nearly to the extent C. linifolius does. Leaves are large, flat, green, glabrous, lanceolate to oblong-lanceolate, 2 to 5 cm long, and 4 to 8 mm wide. Heads contain 4 to 6, usually 5 disc flowers and are arranged into broad, loose cymes. The involucral bracts have obtuse tips with thickened green spots similar to those of C. vaseyi. These spots, however, dry to a bro\sn color. Achenes are covered. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original McArthur, E. Durant; United States. Forest Service. cn. Ogden, Utah : Intermountain Forest and Range Experiment Station, Forest Service, U. S. Dept. of Agriculture
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