Equisetum sylvaticum

Linnaeus

Sp. Pl. 2: 1061. 1753.

Common names: Wood horsetail prêle des bois
Treatment appears in FNA Volume 2.

Aerial stems dimorphic; vegetative stems brownish to green, branched, 25–70 cm; hollow center 1/6–1/3 stem diam. Sheaths squarish in face view, 3–6 × 2.5–6 mm; teeth reddish, 8–18, papery, 3–10 mm, coherent in 3–4 large groups. Branches in regular whorls, delicate, arching, branched, solid; ridges 3–4; valleys channeled; 1st internode of each branch longer than subtending stem sheath; sheath teeth attenuate. Fertile stems brown, with stomates, initially unbranched, persisting and becoming branched and green after spore discharge. 2n =216.


Phenology: Cones maturing in late spring.
Habitat: Moist forests
Elevation: 0–2800 m

Distribution

V2 639-distribution-map.gif

Greenland, St. Pierre and Miquelon, Alta., B.C., Man., N.B., Nfld. and Labr., N.W.T., N.S., Nunavut, Ont., P.E.I., Que., Sask., Yukon, Alaska, Conn., Del., Idaho, Iowa, Maine, Md., Mass., Mich., Minn., N.H., N.J., N.Y., N.Dak., Ohio, Pa., R.I., S.Dak., Vt., Va., Wash., W.Va., Wis., Europe, n Asia to ne China, Japan in Hokkaido.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Equisetum sylvaticum"
Richard L. Hauke +
Linnaeus +
Undefined subg. Hippochaete +
Wood horsetail +  and prêle des bois +
Greenland +, St. Pierre and Miquelon +, Alta. +, B.C. +, Man. +, N.B. +, Nfld. and Labr. +, N.W.T. +, N.S. +, Nunavut +, Ont. +, P.E.I. +, Que. +, Sask. +, Yukon +, Alaska +, Conn. +, Del. +, Idaho +, Iowa +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, N.H. +, N.J. +, N.Y. +, N.Dak. +, Ohio +, Pa. +, R.I. +, S.Dak. +, Vt. +, Va. +, Wash. +, W.Va. +, Wis. +, Europe +, n Asia to ne China +  and Japan in Hokkaido. +
0–2800 m +
Moist forests +
Cones maturing in late spring. +
Equisetum sylvaticum +
Equisetum subg. Hippochaete +
species +