]> Botany [collector note: Alaska: NY, US; Alberta (col. 1941): NY; Arizona and Wyoming: DPU (plants from Ariz.), MO, NY, US; United States: CU, DS, KSC, MONTU, NY, POM, TEX, US, UTC, WS, WTU] Nelson, A. & Nelson, Ruth Elizabeth Nelson, A. & Nelson, Ruth Elizabeth A. Nelson & R. E. Nelson