Viola sagittata sagittata Ait.
|The purple-flowered, stemless violets of the Atlantic coast|
C L Pollard (1896) Proceedings of The Biological Society of Washington 10: 85-92
|The Flora of the Edgehill Ridge near Willow Grove and Its Ecology|
(1900) Proceedings of The Academy of Natural Sciences of Philadelphia 52: 482-490
|Fifth list of additions to the flora of Washington, D.C|
T Holm (1901) Proceedings of The Biological Society of Washington 14: 7-22