Botrychium ascendens |
Botrychium pseudopinnatum |
|
---|---|---|
trianglelobe moonwort, upswept moonwort |
false daisyleaf moonwort, false northwestern moonwort |
|
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 6 pairs, 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 crenulate, apex truncate, venation pinnate. |
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 0–3 mm, 0 to 0.2 times length of trophophore rachis; blade dark green, somewhat shiny, oblong, 1–2-pinnate, to 4.5 × 2.5 cm, leathery. |
Sporophores | 2-pinnate at base of sporangial cluster, 1.3–2 times length of trophophore. |
2-pinnate, 1–2 times length of trophophore. |
2n | =180. |
=270. |
Botrychium ascendens |
Botrychium pseudopinnatum |
|
Phenology | Leaves appearing in late spring to midsummer. | Leaves appearing in late spring to early fall. |
Habitat | In grassy fields, widely scattered | Sandy soil |
Elevation | 0–2500 m (0–8200 ft) | 300–500 m (1000–1600 ft) |
Distribution |
AK; CA; MT; NV; OR; WY; BC; ON; YT
|
ON |
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.) |
Botrychium pseudopinnatum is the only known hexaploid in Botrychium subg. Botrychium. It differs from B. pinnatum in smaller size, in narrower trophophore with relatively shorter and more oblique and ascending pinnae, in longer trophophore stalk, and in blade color, texture, and luster. Of conservation concern. (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. 76: 36, figs. 1, 2. (1986) | W. H. Wagner: Contr. Univ. Michigan Herb. 17: 322. (1990) |
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