Collected in Southern California (between 32° and 36° N. lat [?] 114° - 121° W long.,) on the Mexican Boundary Survey : by C. C. Parry [?] M. D., under the direction of Maj. W. H. Emory, Chief Astronomer of the Commission
New Hampshire, Cheshire Country, Town of Walpole, Along the Connecticut River just upstream from the N.H. route 123 bridge to Westminster, Vermont, near confluence with Mad Brook
Occasional plants in clay soil on roadside banks near the Gualala River crossing east of Stewart Point. Flowers usually dark purple-violet. Humid Transition Life Zone.