References for Geraniaceae
Jones, G.N. and F.F. Jones. 1943. A revision of the perennial species of Geranium of the United States and Canada. Rhodora 45:5-26, 32-53.
Yeo, P.F. 1973. The biology and systematics of Geranium, sections Anemonifolia Knuth and Ruberta Dun. Bot. J. Linn. Soc. 67-285-346.

Source for the Reference Lists

George W. Douglas, Del Meidinger and Jim Pojar. 1998-2002. Illustrated Flora of British Columbia.