D. F.  Brunton and Britton, D. M., ?Isoetes microvela (Isoetaceae), a new quillwort from the coastal plain of the southeastern United States?, Rhodora, vol. 100, no. 903, pp. 261 - 275, 1998.

D. F.  Brunton and Britton, D. M., ?Appalachian quillwort (Isoetes appalachiana, sp. nov.; Isoetaceae), a new pteridophyte from the eastern United States?, Rhodora, vol. 99, no. 898, pp. 118 - 133, 1997.

D. F.  Brunton and Britton, D. M., ?Isoetes x novae-angliae (Isoetaceae), an additional hybrid quillwort from New England?, Rhodora, vol. 108, no. 935, pp. 228 - 241, 2006.