Difference between revisions of "Botrychium crenulatum"
Amer. Fern J. 71: 21. 1981.
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|common_names=Dainty moonwort | |common_names=Dainty moonwort | ||
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|publication year=1981 | |publication year=1981 | ||
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|genus=Botrychium | |genus=Botrychium | ||
|subgenus=Botrychium subg. Botrychium | |subgenus=Botrychium subg. Botrychium | ||
Latest revision as of 20:25, 5 November 2020
Trophophore stalk 0.5–7 mm; blade yellow-green, oblong, 1-pinnate, to 6 × 2 cm, thin, herbaceous. Pinnae to 5 pairs, spreading, well separated, 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, broadly fan-shaped, undivided to tip, margins mainly crenulate to dentate, proximal pinnae with 1 or more shallow incisions, apex rounded, apical lobe linear to linear-cuneate, well separated from adjacent lobes, venation like ribs of fan, midrib absent. Sporophores 1–2-pinnate, 1.3–3 times length of trophophore. 2n =90.
Phenology: Leaves appearing in mid to late spring, dying in late summer; in extremely dry years of shorter duration or not appearing at all.
Habitat: Local in marshy and springy areas
Elevation: 1200–2500 m
Distribution
Ariz., Calif., Idaho, Mont., Oreg., Nev., Utah, Wash., Wyo.
Discussion
Botrychium crenulatum is commonly associated with B. simplex in California. In the Wallowa Mountains of Oregon it occurs with B. ascendens, B. lunaria, and B. minganense.
Selected References
None.