Aerial stems persisting more than a year, unbranched, 6–55 cm; lines of stomates single; ridges 3–12. Sheaths green with black apical band, spreading, 1–6 × 1–5 mm; teeth 3–14, not articulate. Cone apex pointed; spores green, spheric. 2n =216.

Distribution

North America, Europe, Asia.

Discussion

Subspecies 2 (2 in the flora).

Selected References

None.

Lower Taxa

Equisetum variegatum subsp. alaskanum, Equisetum variegatum subsp. variegatum

Key

1	Sheath teeth erect, with prominent white margins.	Equisetum variegatum subsp. variegatum
1	Sheath teeth incurved, with obscure margins or all black.	Equisetum variegatum subsp. alaskanum