Flora of North America species comparison

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Botrychium crenulatum

crenulate moonwort, dainty moonwort, scalloped moonwort
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.
Trophophore

stalk 0.5–7 mm;

blade yellow-green, oblong, 1-pinnate, to 6 × 2 cm, thin, herbaceous.
Sporophores

1–2-pinnate, 1.3–3 times length of trophophore.
2n

=90.

Botrychium crenulatum
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 (3900–8200 ft)
Distribution
from FNA
AZ; CA; ID; MT; NV; OR; UT; WA; WY
[WildflowerSearch map]
[BONAP county map]
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.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 2.
Parent taxa Ophioglossaceae > Botrychium > subg. Botrychium
Sibling taxa
B. acuminatum, B. ascendens, B. biternatum, B. boreale, B. campestre, B. dissectum, B. echo, B. gallicomontanum, B. hesperium, B. jenmanii, B. lanceolatum, B. lunaria, B. lunarioides, B. matricariifolium, B. minganense, B. montanum, B. mormo, B. multifidum, B. oneidense, B. pallidum, B. paradoxum, B. pedunculosum, B. pinnatum, B. pseudopinnatum, B. pumicola, B. rugulosum, B. simplex, B. spathulatum, B. virginianum
Name authority W. H. Wagner: Amer. Fern J. 71: 21. (1981)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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