Botrychium hesperium
Botrychium acuminatum
western moonwort
point moonwort, tail grapefern
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, spreading to ascending, mostly separated by pinna width, 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 next adjacent pair, narrowly oblanceolate to linear-lanceolate, simple to irregularly divided to tip, margins commonly ± entire and with 1–several shallow and irregular lobes, apex acuminate, venation pinnate.
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 0–20 mm, 0.1–0.5 times length of trophophore rachis;
blade dull, glaucescent, ovate-oblong, 1-pinnate, to 6 × 5 cm, firm.
1–3 pinnate, 2–3 times length of trophophore.
1–2-pinnate, 1.4–2 times length of trophophore.
=180.
=180.
Botrychium hesperium
Botrychium acuminatum
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 acuminatum grows with various other moonworts, particularly its nearest relatives, B. hesperium and B. matricariifolium.
Of conservation concern.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
BC
OR
WA
Flora NW
MI Flora
PNW Herbaria
SW CO Wildflowers
WildflowerSearch
iNaturalist
USDA Plants Database
