58 UNIVERSITY OF COLORADO STUDIES 



Cooper, William S. Collected plants in the vicinity of Long's Peak and Estes Park in 



1904, 1906 and 1908. The specimens were sent to Professor Aven Nelson. Ecological 



studies were also made. 

 Cooper, William S., "The Wild Flowers of Estes Park," in Mills' Story of Estes Park, 



Denver, 1905. [This is a five-page popular account of the most conspicuous wild 



plants of Estes Park, Colo.] 

 , "Alpine Vegetation in the Vicinity of Long's Peak, Colorado," Bot. Gazette, Vol. 



XLV, pp. 319-37, 1908. [An ecological paper illustrated with photographs of 



physiography and wind timber.] 

 Coulter, John M. Collected in 1873. Was with Hayden Survey. 

 Coulter, John M., Manual of Botany. (Phaenogamia and Pteridophyta) of the Rocky 



Mountain Region. New York: American Book Co. No date. Pp. 453. [This 



well-known manual is often bound together with Gray's Lessons in Botany and called 



Gray and Coulter's Text-book of Western Botany.] 

 , "Preliminary Revision of the North American Species of Cactus, Anhalonium, 



and Lophophora," Contributions from U. S. National Herbarium, Vol. Ill, pp. 



95-132, 1894. [Including specimens from Colorado.] 

 , "Preliminary Revision of the North American Species of Echinocactus, Cereus 



and Opuntia," Contributions from U. S. National Herbarium, Vol. Ill, pp. 357- 



462, 1896. [Includes some Colorado specimens.] 

 Coulter, John M., and Fisher, E. M., "Some New North American Plants," Bot. 



Gazette, Vol. XVII, p. 349, 1892. [Abronia carletoni from eastern Colorado.] 

 Coulter, John M. (joint author with Porter, Thomas C, which see). 

 Coulter, John M., and Rose, J. N., "Monograph of the North American Umbel- 



liferae," Contributions from U. S. National Herbarium, Vol. VII, No. I, pp. 9-256, 



1900. [A number of species were collected in Colorado.] 

 , "Synopsis of North American Pines," Bot. Gazette, Vol. XI, pp. 256-62, also pp. 



302-9, 1886. 

 Covtlle, Frederick V., "Ribes coloradense, an Undescribed Currant from the Rocky 



Mountains of Colo.," Proc. Biol. Soc. of Washington, Vol. XIV, pp. 1-6, 1901. 

 Cowan, J. H. Collected near Ft. Collins, at Delta and elsewhere 1891-95; some collec- 

 tions dated 1901. 

 Crandall, C. S. Made collections in various parts of the state while professor in the 



State Agricultural College at Ft. Collins 1890-99. Most of the specimens were taken 



from the region around Ft. Collins but other collections were made in 1892 at Alamosa, 



Antonito in the San Luis Valley, Durango, Silverton, Dolores, Ouray. Gray's Peak, 



Steamboat Springs, Glenwood, Trapper's Lake and Grand Junction were also visited 



at other times. 

 Crandall, Charles S., "Colorado Weeds," Bull. No. 23, Colo. Agricultural College 



Exper. Sta., pp. 1-12, 1893. 

 , "The Russian Thistle," Bull. No. 28, Colo. Agricultural College Exper. Sta., 



pp. 1-13, 1894. 



"Blight and Other Plant Diseases," Bull. No. 41, Colo. Agricultural College Exper. 



Sta., pp. 1- 



Crawford, Albert C, "Laboratory Work on Loco Weed Investigation," Bureau of 

 Plant Industry Bull. 121, Part III, 1908. [This was carried on in connection with 



