Botrychium lanceolatum subsp. angustisegmentum

(Pease & A. H. Moore) R. T. Clausen

Bull. Torrey Bot. Club 64: 280. 1937.

Common names: Narrow triangle moonwort
Endemic
Basionym: Botrychium lanceolatum var. angustisegmentum Pease & A.H. Moore Rhodora 8: 229. 1906
Synonyms: Botrychium angustisegmentum
Treatment appears in FNA Volume 2.

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

V2 631-distribution-map.gif

St. Pierre and Miquelon, Alta., B.C., N.B., Nfld. and Labr. (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.
Warren H. Wagner Jr. +  and Florence S. Wagner +
(Pease & A. H. Moore) R. T. Clausen +
Botrychium lanceolatum var. angustisegmentum +
Narrow triangle moonwort +
St. Pierre and Miquelon +, Alta. +, B.C. +, N.B. +, Nfld. and Labr. (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. +  and Wis. +
0–1200m +
Mainly in shaded woods +
Leaves appearing in late spring or early summer, releasing spores later than most associated species, and dying as late as October. +
Bull. Torrey Bot. Club +
Botrychium angustisegmentum +
Botrychium lanceolatum subsp. angustisegmentum +
Botrychium lanceolatum +
subspecies +