Family: Equisetaceae
common scouring rush, pipes, scouring rush horsetail
[Hippochaete hyemalis (L.) Bruhin]
Etymology: Equisetum: Latin for "horsetail" from equus, "horse," and seta, "bristle"
Plants: perennial fern ally
Habitat: fields, roadsides, and shores
Conservation Status: Native
Plants: perennial fern ally
Habitat: fields, roadsides, and shores
Conservation Status: Native
Common in a wide range of open areas, including roadsides, embankments, railroad rights-of-way, riverbanks, sand dunes, shores, and wet areas in open woodlands. The stems are stiff, strong, roughened with silica tubercles and usually unbranched. They persist overwinter and are rarely flattened on pressed specimens. Sheaths are tightly cylindrical, grayish with a dark band at the base and at the top. The teeth are jointed at the base and drop quickly. The cone apex is usually blunt. Our plants belong to subsp. affine (Engelm.) Calder & Roy L. Taylor; subsp. hyemale grows in Europe and Asia.
Flora of North America: Flora of North America Floristic Rating: Coefficient of Conservatism = 3, Wetland Indicator = FACW- USDA Plants Database: Federal Distribution and detailed information including photos University of Wisconsin - Green Bay: Fern & Fern Allies: Photos, descriptions, information Dan Tenaglia's The Missouri Flora: Fabulous photographs; detailed descriptions; color and leave arrangement key. Southwest School of Botanical Medicine: Britton & Brown Illustrated Flora - 2nd Edition (1913) "An Illustrated Flora of the Northern United States and Canada"