[The Horsetail Family in the Columbia River Gorge of Oregon and Washington]

Giant Horsetail, Great Horsetail

Equisetum telmateia var. braunii

Synonym: Equisetum maximum

The fertile stalk of Giant Horsetail, Great Horsetail: Equisetum telmateia var. braunii (Synonym: Equisetum maximum) - Giant Horsetail, Great Horsetail: Equisetum telmateia var. braunii (Synonym: Equisetum maximum)

These photos show close-ups of the fertile stalk of giant horsetail showing the teeth at several joints 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.

Paul Slichter