Giant Horsetails - Detailed information about Equisetum giganteum, E. myriochaetum, and E. x schaffneri. Includes photos of wild plants and links. www.fiu.edu/~chusb001/giant_equisetum.htm
World of Equisetum - Detailed species accounts of the horsetails (Equisetum subgenus Equisetum). members.eunet.at/m.matus
