Botrychium hesperium |
Botrychium pseudopinnatum |
|
---|---|---|
western moonwort |
false daisyleaf moonwort, false northwestern moonwort |
|
Pinnae | to 6 pairs, ascending, usually approximate or overlapping except in shade forms, distance between 1st and 2d pinnae not or slightly more than between 2d and 3d pairs, basal pinna pair commonly much larger and more divided than adjacent pair, lobed to tip, basal pair oblong to oblong-lanceolate with lobed margins, remainder broadly spatulate with entire margins or 1 or more shallow lobes, apex rounded, venation pinnate. |
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 0–3(–10) mm, to 1/4 length of trophophore rachis; blade ± gray-green, dull, oblong-linear to deltate, 1–2-pinnate, to 6 × 5 cm, 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 | 1–3 pinnate, 2–3 times length of trophophore. |
2-pinnate, 1–2 times length of trophophore. |
2n | =180. |
=270. |
Botrychium hesperium |
Botrychium pseudopinnatum |
|
Phenology | Leaves appearing in midspring, dying in early fall. | Leaves appearing in late spring to early fall. |
Habitat | Grassy mountain slopes, snow fields, road ditches with willows, and sand dunes | Sandy soil |
Elevation | 200–2800 m (700–9200 ft) | 300–500 m (1000–1600 ft) |
Distribution |
AZ; CO; ID; MI; MT; UT; WY; AB; BC; ON; SK
|
ON |
Discussion | In the Rocky Mountains Botrychium hesperium grows often with B. echo, and in the Lake Superior region, with B. acuminatum and B. matricariifolium. (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 | ||
Synonyms | B. matricariifolium subsp. hesperium | |
Name authority | (Maxon & R. T. Clausen) W. H. Wagner & Lellinger: Amer. Fern J. 71: 92. (1981) | W. H. Wagner: Contr. Univ. Michigan Herb. 17: 322. (1990) |
Web links |