Yakutat Moonwort -
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A globally rare species, recently documented in Montana from Glacier National Park.
Plants 8-25 cm tall; common stalk 1-5 cm long. Trophophores green, leathery; stalks 0-0.5 cm long; blades ca. 1.7-11 cm long, ca. 1.2-6 cm wide at thh base, oblong to ovate, once pinnate. Pinna pairs 4-7, angled toward the apex, strongly overlapping one another, the anterior portion overlapping the rachis. Basal pinnae 7-30 mm long, 9-32 mm wide, short-stalked, fan-shapped and spanning an arc of 180-250 degrees, usually symmetrical; basiscopic inner margin strongly recurved; outer pinna margins entire to undulate, occasionally denticulate or shallowly cleft with angular sinuses. Sporophores 8-18 cm long; sporophore stalks 5-9 cm long and longer at maturity than the length of the tropophore; sporangia-bearing portion erect, 1-2 pinnate, broadly lanceolate to narrowly ovate in outline, the branches 6-8, basal branches ascending and not twisted (adapted from Stenvold et al. 2002).
In MT only from Glacier County; AK and KT and northwest BC, with disjunct occurrences in northeastern OR and east-central CA (Donald Farrar, Iowa State University, unpublished ms.).
Observations in Montana Natural Heritage Program Database
Number of Observations:
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Map Help and Descriptions
(Observations spanning multiple months or years are excluded from time charts)
Various open, mesic habitats.
Legend: View Online Publication Do you know of a citation we're missing? Farrar, Donald. 2011. Moonwort (Botrychium) Systematics. Ada Hayden Herbarium. Iowa State University. Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.