River Horsetail, Swamp Horsetail, Water Horsetail
Equisetum fluviatile
Synonyms: Equisetum fluviatile var. limosum, Equisetum limosum
Water horsetail as seen in a ditch along the Park Road near the Wonder Lake Ranger Station, Denali National Park and Preserve............June 19, 2012.
Water horsetail as seen in a ditch along the Park Road near the Wonder Lake Ranger Station, Denali National Park and Preserve............June 19, 2012.
Paul Slichter