Botrychium crenulatum |
Botrychium montanum |
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crenulate moonwort, dainty moonwort, scalloped moonwort |
mountain moonwort, western goblin |
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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. |
or lobes to 6 pairs, ascending, mostly widely separated, distance between 1st and 2d pinnae not or slightly more than between 2d and 3d pairs, extremely variable in outline, linear to cuneate, undivided to tip, margins entire to coarsely dentate, distal pinnae or blade tip cut into 3–5 lobes, apex angular, 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. |
stalk 0.3–2 cm, 0.2–0.5 times length of rachis; blade dull, glaucous, gray-green, mostly linear, lobed to 1-pinnate, to 6 × 0.7 cm, somewhat succulent. |
Sporophores | 1–2-pinnate, 1.3–3 times length of trophophore. |
1-pinnate, 1.5–4.5 times length of sporophore. |
2n | =90. |
=90. |
Botrychium crenulatum |
Botrychium montanum |
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Phenology | Leaves appearing in mid to late spring, dying in late summer; in extremely dry years of shorter duration or not appearing at all. | Leaves appearing in late spring to late summer. |
Habitat | Local in marshy and springy areas | Dark coniferous forests, usually near swamps and streams |
Elevation | 1200–2500 m (3900–8200 ft) | 1000–2000 m (3300–6600 ft) |
Distribution |
AZ; CA; ID; MT; NV; OR; UT; WA; WY
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CA; MT; OR; WA; BC
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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.) |
Botrychium montanum may come to be recognized as a subspecies of the eastern B. mormo, from which it differs in lacking an attached gametophyte and in having a more dissected trophophore apex, glaucous blades, shorter trophophore stalk, earlier seasonal development, and full opening of sporangia when mature. Botrychium montanum and B. mormo differ from B. simplex in being more robust and in having truncate, adnate, lateral lobes on the trophophore blade and dentate to deeply cleft trophophore apex. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 2. | FNA vol. 2. |
Parent taxa | Ophioglossaceae > Botrychium > subg. Botrychium | Ophioglossaceae > Botrychium > subg. Botrychium |
Sibling taxa | ||
Name authority | W. H. Wagner: Amer. Fern J. 71: 21. (1981) | W. H. Wagner: Amer. Fern J. 71: 29. (1981) |
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