Oregon Flora Image Project | |
Equisetum telmateia Ehrh. var. braunii (Milde) R. L. Hauke | giant horsetail - native Equisetaceae |
Click on an image for a larger version. All images © Gerald D. Carr unless otherwise noted.
In this species, ephemeral, unbranched, non-green shoots produce terminal spore-bearing cones in early spring; the highly branched, sterile green shoots persist through the growing season. Rarely, as seen in the last two images, the green shoots may produce rudimentary terminal cones.