A.C. Bicknell 1958 Pisum cernuum Snowberry Canyon, Boulder, Arapaho Co., Col. May 1st. Can't get at the species on some shades, brushy shade beside UC Botanical Garden Fence (+ on Snowberry'dsbeck). Part up to +9. Can't get any of the others with them, unusual no other species of Pisum cernuum here since trapping here or close by, has often given P. tragus + P. mandonatum — maybe I was in too damp & shady a spot. 28 3/4 mi N Montavilla, 3600+ ft, McCoy Valley, San Diego Co., Calif Sept 13 Dr. Liockes took a couple off mice, or beetles? in chaparral-like thicket, which certainly looks like P. cernuum.