Water Horsetail

Description:

The sterile stem is green and usually has whorled branches that are spreading to ascending. The “leaves” are reduced to a sheath that surrounds the stem, with 12 to 24 narrow, black-brown teeth around the top that occasionally have a narrow band of white around the edge.

Habitat:

Woodland trail alongside a small river.

Notes:

Water Horsetail can create very large, dense colonies, often in the quiet waters of lakes and ditches.