D. M.  Britton and Goltz, J. P., ?Isoetes prototypus, a new diploid species from eastern Canada?, Canadian Journal of Botany, vol. 69, no. 2, pp. 277 - 281, 1991.

L.  Kott and Britton, D. M., ?Spore morphology and taxonomy of Isoetes in northeastern North America.?, Canadian Journal of Botany, vol. 61, no. 12, pp. 3140 - 3163, 1983.

L. S.  Kott and Britton, D. M., ?A comparative study of spore germination of some Isoetes species of northeastern North America.?, Canadian Journal of Botany, vol. 60, no. 9, pp. 1679 - 1687, 1982.

D. M.  Britton and Brunton, D. F., ?Isoetes X marensis, a new interspecific hybrid from western Canada?, Canadian Journal of Botany, vol. 73, no. 9, pp. 1345 - 1353, 1995.

L. J.  Musselman, Bray, R. D., and Knepper, D. A., ?Isoetes x carltaylorii (Isoetes acadiensis x Isoetes engelmannii), a new interspecific quillwort hybrid from the Chesapeake Bay?, Canadian Journal of Botany, vol. 75, no. 2, pp. 301 - 309, 1997.

D. F.  Brunton and Britton, D. M., ?Isoetes xechtuckerii, hyb. nov., a new triploid quillwort from northeastern North America?, Canadian Journal of Botany, vol. 77, no. 11, pp. 1662 - 1668, 1999.