| Equisetum praealtum | |
|---|---|
| |
| Equisetum praealtum by the Columbia River at Spanish Castle, Douglas County, Washington | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Division: | Polypodiophyta |
| Class: | Polypodiopsida |
| Subclass: | Equisetidae |
| Order: | Equisetales |
| Family: | Equisetaceae |
| Genus: | Equisetum |
| Subgenus: | E. subg. Hippochaete |
| Species: | E. praealtum
|
| Binomial name | |
| Equisetum praealtum | |
| Synonyms[1] | |
| |
Equisetum praealtum,[1] the scouringrush horsetail,[2] is a species of Equisetum (horsetail) native to North America and northeastern Asia.[1] It was formerly widely treated as a subspecies or variety of the European and west Asian species Equisetum hyemale (rough horsetail), and still is by some authorities.[3]
- ^ a b c "Equisetum praealtum Raf". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2024-09-18.
- ^ "Equisetum hyemale L. var. affine (Engelm.) A.A.Eaton". USDA Plants Database. Retrieved 2024-09-18.
- ^ Flora of North America: Equisetum hyemale subsp. affine