Calla palustris
Illustration by Mary Vaux Walcott. North
American Wild Flowers. Washington, 1925.
La lobelie rouge. Lobelia venenata
Illustrations of Himalayan plants. W. H. Fitch.
London, 1855
Bignonia radicans
Illustration by Mary Vaux Walcott. North
American Wild Flowers. Washington, 1925.