Illustrator: Laurie Klingensmith

Copyright: Flora of North America Association

Aerial stems persisting for 1 year or less, with stomates on surfaces scattered or in bands on each side of valleys. Branches in regular whorls, except for unbranched forms of Equisetum fluviatile and E. palustre and brown fertile stems of dimorphic species. Cones rounded at apex.

Distribution

North America, s Central America, w South America, Europe, Asia.

Discussion

Species 8 (6 in the flora).

Selected References

Hauke, R.L. 1978. A taxonomic monograph of Equisetum subgenus Equisetum. Nova Hedwigia 30: 385--455.

Lower Taxa

Equisetum hyemale, Equisetum laevigatum, Equisetum ramosissimum, Equisetum scirpoides, Equisetum variegatum, Equisetum ×ferrissii, Equisetum ×mackaii, Equisetum ×nelsonii