Botrychium ascendens |
Botrychium lanceolatum |
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trianglelobe moonwort, upswept moonwort |
botryche élancé, lance-leaf grapefern, lance-leaf moonwort, red triangle moonwort, triangle moonwort |
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Pinnae | to 5 pairs, strongly ascending, 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, obliquely narrowly cuneate, undivided to tip, margins sharply denticulate and often shallowly incised, apex rounded, venation like ribs of fan, midrib absent. |
to 5 pairs, ascending, approximate, distance between 1st and 2d pinnae not or slightly more than between 2d and 3d pairs, linear to broadly lanceolate, entire to divided to tip, margins with distinct lobes or segments, apex acute to rounded, venation pinnate. |
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Trophophore | stalk 3–10 mm, 1/6 length of trophophore rachis; blade yellow-green, oblong to oblong-lanceolate, 1-pinnate, to 6 × 1.5 cm, thin but firm. |
stalk 0–1 mm; blade dull to shiny green to dark green, deltate, 1–2-pinnate, to 6 × 7 cm. |
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Sporophores | 2-pinnate at base of sporangial cluster, 1.3–2 times length of trophophore. |
1–3-pinnate, 1–2.5 times length of trophophore, divided into several equally long branches (all other botrychiums have a single stalk or 1 dominant and 2 smaller). |
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2n | =180. |
=90. |
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Botrychium ascendens |
Botrychium lanceolatum |
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Phenology | Leaves appearing in late spring to midsummer. | |||||
Habitat | In grassy fields, widely scattered | |||||
Elevation | 0–2500 m (0–8200 ft) | |||||
Distribution |
AK; CA; MT; NV; OR; WY; BC; ON; YT
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AK; AZ; CO; CT; ID; KY; MA; ME; MI; MN; MT; NH; NJ; NM; NV; NY; OH; OR; PA; RI; TN; UT; VA; VT; WA; WI; WV; WY; AB; BC; NB; NF; NS; ON; QC; SK; YT; Eurasia
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Discussion | Botrychium ascendens is a distinctive little moonwort that grows with B. crenulatum, B. lunaria, and B. minganense. This species and B. pedunculosum are the only grapeferns that often have extra sporangia on the proximal pinnae. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Subspecies 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 2. | FNA vol. 2. | ||||
Parent taxa | Ophioglossaceae > Botrychium > subg. Botrychium | Ophioglossaceae > Botrychium > subg. Botrychium | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Osmunda lanceolata | |||||
Name authority | W. H. Wagner: Amer. Fern J. 76: 36, figs. 1, 2. (1986) | (S. G. Gmelin) Angström: Bot. Not. 1854: 68. (1854) | ||||
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