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 |