Burke: Botrychium crenulatum vs. Botrychium minganense

	Botrychium crenulatum	Botrychium minganense
	dainty moonwort, scalloped moonwort	Mingan moonwort
Habit		Terrestrial perennials up to 15 cm, from 10 or fewer yellow to brown roots 0.5-1.5 mm in diameter at 1 cm from base.
Leaves		Trophophore blade dull green, oblong to linear, 1-pinnate, to 10 cm long and 2.5 cm broad, firm to herbaceous, on stalk 0-2 cm, up to 1/5 the length of rachis; trophophore pinnae in up to 10 pairs, horizontal to somewhat spreading, space between 1st and 2nd pinnae equal to or longer than space between 2nd and 3rd pairs, basal pinna pair approximately same size and cutting as adjacent pair, sometimes basal pinnae and some distal pinnae elongate, lobed to tip, nearly orbicular to fan-shaped to ovate, sides slightly concave, margins nearly entire to shallowly crenate or occasionally lobed, apex rounded, venation like ribs of fan with short midrib; sporophores 1-pinnate or 2-pinnate in large and robust specimens, 1.5-2.5 times the length of the trophophore.
Spores		Sporangium nearly completely exposed, borne in 2 rows on sporophore branches; spore surfaces wrinkled and somewhat warty.

	Botrychium crenulatum	Botrychium minganense
Habitat	Edges of montane fens, wet meadows, or seeps, often in dense vegetation or shade	Mesic, montane to subalpine meadows, and seeps, and in duff under Thuja plicata.
Distribution	Occurring east of the Cascades crest in northern Washington; British Columbia to California, east to Montana, Wyoming, and Colorado, rarely to Minnesota and Ontario. [WildflowerSearch map] [BONAP county map]	Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Colorado and to Maine across the northern tier of states [WildflowerSearch map] [BONAP county map]
Origin	Native	Native
Conservation status	Not of concern	Not of concern
Sibling taxa	B. ascendens, B. hesperium, B. lanceolatum, B. michiganense, B. minganense, B. montanum, B. neolunaria, B. paradoxum, B. pedunculosum, B. pinnatum, B. simplex, B. viride	B. ascendens, B. crenulatum, B. hesperium, B. lanceolatum, B. michiganense, B. montanum, B. neolunaria, B. paradoxum, B. pedunculosum, B. pinnatum, B. simplex, B. viride
Web links	Local floras: BC, CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local floras: BC, CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Botrychium minganense

dainty moonwort, scalloped moonwort

Mingan moonwort

Habit

Terrestrial perennials up to 15 cm, from 10 or fewer yellow to brown roots 0.5-1.5 mm in diameter at 1 cm from base.

Leaves

Trophophore blade dull green, oblong to linear, 1-pinnate, to 10 cm long and 2.5 cm broad, firm to herbaceous, on stalk 0-2 cm, up to 1/5 the length of rachis; trophophore pinnae in up to 10 pairs, horizontal to somewhat spreading, space between 1st and 2nd pinnae equal to or longer than space between 2nd and 3rd pairs, basal pinna pair approximately same size and cutting as adjacent pair, sometimes basal pinnae and some distal pinnae elongate, lobed to tip, nearly orbicular to fan-shaped to ovate, sides slightly concave, margins nearly entire to shallowly crenate or occasionally lobed, apex rounded, venation like ribs of fan with short midrib; sporophores 1-pinnate or 2-pinnate in large and robust specimens, 1.5-2.5 times the length of the trophophore.

Spores

Sporangium nearly completely exposed, borne in 2 rows on sporophore branches; spore surfaces wrinkled and somewhat warty.

Botrychium crenulatum

Botrychium minganense

Habitat

Edges of montane fens, wet meadows, or seeps, often in dense vegetation or shade

Mesic, montane to subalpine meadows, and seeps, and in duff under Thuja plicata.

Distribution

Occurring east of the Cascades crest in northern Washington; British Columbia to California, east to Montana, Wyoming, and Colorado, rarely to Minnesota and Ontario.

[WildflowerSearch map]

[BONAP county map]