Giant Horsetail, Great Horsetail
Equisetum telmateia var. braunii
Synonyms: Equisetum maximum, Equisetum telmateia ssp. braunii
A close-up of the fertile stalk of giant horsetail as seen along the Springwater Trail near Palmblad Road to the east of Gresham, OR..........April 13, 2017.
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A close-up of the teeth at several joints on the fertile stalk of giant horsetail as seen along the Springwater Trail near Palmblad Road to the east of Gresham, OR.........April 2, 2011. The teeth are clustered into groups of two to four.
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Giant horsetails observed along the Springwater Trail where Rugg Road crosses Johnson Creek several miles east of Gresham, OR.......April 10, 2020.
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Giant horsetails observed along with bleeding hearts (Dicentra formosa) and Pacific waterleaf (Hydrophyllum tenuipes) the Springwater Trail between Gresham and Boring, OR.....May 4, 2023.
Paul Slichter