ClipArt ETC
"Equisetum sylvaticum: a, a, sheath crowned with teeth; b, branches; c, c, fruiting spikes. 2. Clypeola, bearing sporangia. 3. Spore, with elaters coiled about it." -Whitney, 1911

Wood Horsetail

"Equisetum sylvaticum: a, a, sheath crowned with teeth; b, branches; c, c, fruiting spikes. 2. Clypeola,…

"A scouring-rush (Equisetum sylvaticum). At the right is a colorless fertile stem, in the middle a green sterile one, and at the left a green fertile one." -Bergen, 1896

Scouring Rush

"A scouring-rush (Equisetum sylvaticum). At the right is a colorless fertile stem, in the middle a green…