Adnate Moonwort - Botrychium adnatum
State Rank Reason (see State Rank above)
A tentatively recognized species that has not been formally published; currently known only from northwest Montana.
- Details on Status Ranking and Review
Score3 - Vey Small: Generally <2,000 individuals.
Score3 - Local Endemic or Very Small Montana Range: Generally restricted to an area <10,000 sq. miles (equivalent to the combined area of Phillips and Valley Counties) or <6 Sub-basins (4th code watersheds) Range-wide OR limited to one Sub-basin in Montana
Area of Occupancy
Score3 - Very Low: Generally occurring in 3 or fewer Subwatersheds (6th Code HUC’s).
Score1 - Moderate: Species is restricted to a specific habitat that is more widely distributed or to several restricted habitats and is typically dependent upon relatively unaltered, good-quality habitat (C Values of 5-7).
Score0-3 - Population trends are unknown.
Score0-1 - Low to Medium.
Score1-2 - Moderate to High Vulnerability.
Raw Conservation Status Score
11 to 16 total points scored out of a possible 19.
According to unpublished information by Farrar and colleagues, this species has broadly attached ("adnate") pinnae that merge gradually into the rachis (that is, the pinnae are decurrent). The species is also said to be conspicuously glaucous and blue-gray in color.
Currently only known in the western part of Glacier National Park, according to an unpublished summary by Donald Farrar (Iowa State Univeristy)
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)
Mesic fescue grasslands.
Ecological Systems Associated with this Species
- Commonly Associated with these Ecological Systems
- Additional ReferencesLegend: 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.