Equisetum pratense Ehrh.
|A list of the ferns and fern allies of North America north of Mexico, with principal synonyms and distribution|
William R Maxon (1901) Proceedings of The United States National Museum 23: 619-651
|A TAXONOMIC AND ECOLOGIC STUDY OF THE RIVERBOTTOM FOREST ON ST-MARY RIVER LEE CREEK AND BELLY RIVER IN SOUTHWESTERN ALBERTA CANADA|
R K Shaw (1976) Great Basin Naturalist 36: 243-271
|A floristic survey of the Bear Trap Canyon, Madison County, Montana, with a discussion of author citations using the connecting words In or Ex|
P P Lowry (1981) Phytologia 49: 81-94