Difference between revisions of "Botrychium pinnatum"

H. St. John

Amer. Fern J. 19: 11. 1929.

Common names: Northwestern moonwort
Endemic
Synonyms: Botrychium boreale subsp. obtusilobum (Ruprecht) R.T. Clausen
Treatment appears in FNA Volume 2.
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|genus=Botrychium
 
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|subgenus=Botrychium subg. Botrychium
 
|subgenus=Botrychium subg. Botrychium

Revision as of 21:14, 27 May 2020

Trophophore stalk 0–2 mm, 0 to 0.1 times length of trophophore rachis; blade bright shiny green, oblong-deltate, 1–2-pinnate, to 8 × 5 cm, papery. Pinnae to 7 pairs, only slightly ascending, approximate to overlapping, distance between 1st and 2d pinnae not or slightly more than between 2d and 3d pairs, basal pinna pair approximately equal in size and cutting to adjacent pair, obliquely ovate to lanceolate-oblong, to spatulate, deeply and regularly lobed or pinnulate, lobed to tip, margins entire to very shallowly crenate, apex truncate to somewhat acute, venation pinnate. Sporophores 2-pinnate, 1–2 times length of trophophore. 2n =180.


Phenology: Leaves appearing in June to August.
Habitat: Grassy slopes, streambanks, woods
Elevation: 0–2500 m

Distribution

V2 582-distribution-map.gif

Alta., B.C., N.W.T., Yukon, Alaska, Calif., Colo., Idaho, Mont., Nev., Oreg., Utah, Wash., Wyo.

Discussion

Botrychium pinnatum is most commonly associated with B. lanceolatum and B. lunaria. Specimens of B. pinnatum have been misidentified as Botrychium boreale.

Selected References

None.

Lower Taxa

None.
... more about "Botrychium pinnatum"
Warren H. Wagner Jr. +  and Florence S. Wagner +
H. St. John +
Northwestern moonwort +
Alta. +, B.C. +, N.W.T. +, Yukon +, Alaska +, Calif. +, Colo. +, Idaho +, Mont. +, Nev. +, Oreg. +, Utah +, Wash. +  and Wyo. +
0–2500 m +
Grassy slopes, streambanks, woods +
Leaves appearing in June to August. +
Amer. Fern J. +
Botrychium boreale subsp. obtusilobum +
Botrychium pinnatum +
Botrychium subg. Botrychium +
species +