Contains
- cone
Cone-shaped mass of ovule- or spore-bearing scales or bracts.
- variegated horsetail
Northern North America; Greenland; northern and central Europe.
- wood horsetail
Eurasia except southern Russia; northern North America.
- swamp horsetail
Eurasia; northern North America to Virginia.
- common horsetail
Of Eurasia and Greenland and North America.
- marsh horsetail
Scouring-rush horsetail widely distributed in wet or boggy areas of northern he...
- scouring rush
Evergreen erect horsetail with rough-edged stems; formerly used for scouring uten...