Title: Report upon United States Geographical Surveys
Abbreviation: Rep. U.S. Geogr. Surv., Wheeler
Name: Report upon United States Geographical Surveys West of the One Hundredth Meridian, in Charge of First Lieut. Wheeler ... vol. vi. - Botany. Washington, DC
Rothrock, J.T. 1878 (publ. 1879). Reports upon the botanical collections made in portions of Nevada, Utah, California, Colorado, New Mexico, and Arizona, during the years 1871, 1872, 1873, 1874, and 1875. In: Report upon United States Geographical Surveys West of the One Hundredth Meridian, in Charge of First Lieut. Geo. M. Wheeler ... Vol. 6, Botany. BHLReference page.