• Wind Cave National Park - Two Worlds

    Wind Cave

    National Park South Dakota

Horsetails - Smooth Scouring Rush

Smooth Scouring Rush - Equisetum laevigatum
Smooth Scouring Rush, Smooth Horsetail - Equisetum laevigatum
NPS Photo by Jim Pisarowicz
Smooth Scouring Rush derives its name because early seetlers and Indians used them for scouring and polishing. Their grittiness comes from the high silica content of their cells.

Did You Know?

Porcupine in tree

Porcupine babies are called porcupettes. When they are born they have 15,000 quills. Porcupettes are born in the spring and, lucky for mom, the quills are soft. They can climb trees within an hour of birth. More...