]> [author note: Herbarium and types: US; additional material at A, BRU, CINC, CLM, DPU, DS, E, F, FH, ILL, ILS, K, KNOX, KU, MASS, MSC, NA, NMC, NY, NYS, PENN, PH, POM, WELC, WECO, WS] [collector note: Herbarium: US; Accompanied J. W. Powell on his expedition to Colorado in the latter half of 1868, the labels with these specimens captioned "Rocky Mountains, Lat. 40-41°"] Botany Vasey, George Vasey, George G. Vasey Vasey Dr. George Vasey 1822 1893