Isoetes appalachiana D.F.Brunt. & D.M.Britton - Taxonomic data and mapped distribution of this quillwort from Atlas of Florida Vascular Plants. www.plantatlas.usf.edu/main.asp?plantID=3045
Isoetes boomii Luebke - Taxonomic data and mapped distribution of this quillwort from Atlas of Florida Vascular Plants. www.plantatlas.usf.edu/main.asp?plantID=2632
Isoetes flaccida Shuttlew. ex A.Braun - Taxonomic data and mapped distribution of this quillwort from Atlas of Florida Vascular Plants. www.plantatlas.usf.edu/main.asp?plantID=2508
Isoetes hyemalis D.F.Brunt. - Taxonomic data and mapped distribution of this quillwort from Atlas of Florida Vascular Plants. www.plantatlas.usf.edu/main.asp?plantID=3001
Isoetes: this is a Fern? - Notes on Isoetes wormaldii from the Selmar Schonland Herbarium, Grahamstown, South Africa. www.ru.ac.za/departments/herbarium/leaf2a.html
The Isoetes Page - Information on natural history of the genus and research at Universita' di Palermo. www.unipa.it/~bellini
