Plants slender. Leaf base, including sheath, to 0.7cm diam., usually swollen only 1–3 times width of common stalk (dried). Common stalk dark brownish green, trophophore blade dark green, very shiny. Segments narrow, ultimate lobes narrowly linear-oblong, 1–2 mm wide, blade tissue thin but firm. Pinnae and lobes mostly sharply pointed. Sporangia 0.7–1 mm diam., slightly immersed, mostly ± separated and exposing sporangiophore midrib.

Phenology: Leaves appearing in late spring or early summer, releasing spores later than most associated species, and dying as late as October.
Habitat: Mainly in shaded woods
Elevation: 0–1200m

Distribution

• Generated Map
• Legacy Map

St. Pierre and Miquelon, Alta., B.C., N.B., Nfld., N.S., Ont., Que., Sask., Yukon, Conn., Ky., Maine, Mass., Mich., Minn., Mont., N.H., N.J., N.Y., Ohio, Pa., R.I., Tenn., Vt., Va., W.Va., Wis.

Discussion

Selected References

None.

Lower Taxa

None.