]> GH barcode-00277211 United States of America Arizona Grand Canyon-Parashant Natl. Monument; Andrus Canyon; 1-4 mi. above rd. crossing in wash bottom. T32N R11W S1. Also T33N, R11W, S24, 25 & 36. Physaria arizonica var. andrusensis N. D. Atwood, S. L. Welsh & L. C. Higgins N. D. Atwood, S. L. Welsh & L. C. Higgins 2010-08-16 16:38:33 N. D. Atwood & L. C. Higgins