. Brigham Young University science bulletin. Biology -- Periodicals. tree of this species, near Cedar City, is 11 feet in cir- cumference and 75 feet in height (Littlecott 1969, USDA 1969). Representative Specimens: Beaver Co., Needle Range, Welsh & G. Moore 3480, August 14, 1964 (BRY); Box Elder Co., Raft River Mts., Preece 903. May 18, 1948 (UT); Cache Co., near Monte Cristo, Erdman 2599, August 28, 1965 (Weber State College); Garfield Co., Escalante Mts., Beck & Tanner , June 12, 1936 (BRY); Grand Co., Roan Plateau (east) Graham 9252, June 18. 1935 (CM); Millard C
. Brigham Young University science bulletin. Biology -- Periodicals. tree of this species, near Cedar City, is 11 feet in cir- cumference and 75 feet in height (Littlecott 1969, USDA 1969). Representative Specimens: Beaver Co., Needle Range, Welsh & G. Moore 3480, August 14, 1964 (BRY); Box Elder Co., Raft River Mts., Preece 903. May 18, 1948 (UT); Cache Co., near Monte Cristo, Erdman 2599, August 28, 1965 (Weber State College); Garfield Co., Escalante Mts., Beck & Tanner , June 12, 1936 (BRY); Grand Co., Roan Plateau (east) Graham 9252, June 18. 1935 (CM); Millard Co., Canyon Mts., Robins 94, August 16, 1913 (USFS);Salt Lake Co., Mill Creek, , Garrett 6098, May 8, 1932 (UT); San Juan Co., Abajo Mts., Erdman 259, July 29, 1960 (BRY); Sevier Monroe Harrington 16, August 10, 1940 (USPS); Uintah Co., Uinta Mts., Goodding 1215, June 30, 1902 (US); Washington Co., Silver Reef, yo/!« 5169, May 5, 1894 (US). UTAH OUTLINE MAP. Fig. 34. Populus tremuloides Michx. Fig. 35. Prosopis glandulosa Tott. Prasopis glandulosa Torr. (Fig. 35) Mesquite is a very common plant in the southwest, and is an aggressive invader of disturbed land. In Texas it has spread over millions of acres of grazing land. In Utah it is restricted to the valley of the Virgin River. Representative Specimens: Washington Co., St. George, Eggleston 14799, September 7-1 2, 1918 (US); Washing- ton Co., Rockville, Erdman 63, May 11, 1960 (BRY). Prosopis pubesceiis Benth. (Fig. 36) The Fremont screwbean, so named because of the tiglitly coiled nature of its fruit, is a small shrubby tree of the Virgin River basin in Washington County. It is less common than/", glandulosa. Representative Specimens: Washington Co., Beaver Dam Mts., Higgins 818, August 19, 1966 (BRY);Washmgton Co., Santa Clara, Cottam 3396, June 21, 1928 (BRY).. Please note that these images are extracted from scanned page images that may have been digitally en
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