]> [author note: Herbarium and types: RSA (12-14,000); duplicates at A, BH, CAS, DS, GH, JEPS, NEBC, NO, UT, WELC (now at NY)] [collector note: Western United States; A] Botany Peirson, Frank Warrington Peirson, Frank Warrington F. W. Peirson Peirson Frank Warrington Peirson 1865 1951