Equisetum arvense
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Equisetum giganteum Expedition
Personal account of a trip to find Giant Horsetails in Costa Rica.
Giant Horsetails
Detailed information about Equisetum giganteum, E. myriochaetum, and E. x schaffneri. Includes photos of wild plants and links.
World of Equisetum
Detailed species accounts of the horsetails (Equisetum subgenus Equisetum).