[Equisetum pratense f. nanum Ehrh.]
Etymology: Equisetum: Latin for "horsetail" from equus, "horse," and seta, "bristle"
Plants: perennial fern ally
Habitat: moist woodlands
Conservation Status: Native
Flora of North America: Flora of North America Floristic Rating: Coefficient of Conservatism = 9, Wetland Indicator = FACW USDA Plants Database: Federal Distribution and detailed information including photos University of Wisconsin - Green Bay: Fern & Fern Allies: Photos, descriptions, information Southwest School of Botanical Medicine: Britton & Brown Illustrated Flora - 2nd Edition (1913) "An Illustrated Flora of the Northern United States and Canada"
-stems branched but not branched again
-branches horizontly spreading
-teeth with black center and white margin, not fused together
-first branch internode shorter or equal to the adjacent stem sheath