Monographs Details: Hippochaete prealta Farw.
Authority: Farwell, Oliver A. 1916. The genus Hippochaete in North America, north of Mexico. Mem. New York Bot. Gard. 6: 461-472.
Family:Equisetaceae
Description:Distribution and Ecology - Keweenaw Peninsula, Mich., Farwell 209 1/2, May 30, 1885; 572, Aug. 29, 1887. Rochester, Mich., Farwell 2975, Aug. 4, 1912; 3696 and 3710, June 28, 1914; 3722, July 19, 1914; 3922 and 3927, October 25, 1914. Parkedale Farm, Mich., Farwell 3988 1/2, June 20, 1915. May be found from the Atlantic to the Pacific but rare east of the Mississippi basin.

Discussion:

Equisetum prealtum Raf. Fl. Ludovic. 13. 1817.

Equisetum robustum A. Br. Am. Jour. Sci. 46, 88. 1843.

Equisetum robustum var. minus Engelm. in A. Br. Am. Jour. Sci. 46, 88. 1843.

Equisetum hyemale var. Drummondi Milde, Mon. Equit. 593. 1865 (?).

Equisetum hiemale var. robustum A. A. Eaton, Fern Bull. 11: 112. 1903.

Equisetum hiemale var. californicum Milde; A. A. Eaton, Fern Bull. 11: 113. 1903, as to the plants with rounded ridges.

Equisetum hyemale var. prealtum (Raf.) Clute, Fern Bull. 16: 18. 1908.

This is our largest and most widely spread species and probably our most common one. It is well characterized by its cylindrical, tight sheaths, which are as broad as long or sometimes a little broader or narrower than long, its persistent teeth, and very numerous, rounded ridges. It may be found on sand banks, in poor soil, in swamps and bogs; generally near water. Mr. C. K. Dodge has collected it near Port Huron, Mich., and near Sarnia, Ontario.

Distribution:United States of America North America|