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Montana Field Guide

Montana Field Guides

Lanceleaf Moonwort - Botrychium lanceolatum

Species of Concern

Global Rank: G5
State Rank: S3
* (see State Rank Reason below)

Agency Status
MNPS Threat Rank:
C-value: 6

External Links

State Rank Reason (see State Rank above)
Reported from approximately two dozen sites. Population levels are poorly documented. As this species was not previously tracked in the state, it may be under-reported.
  • Details on Status Ranking and Review
    Lanceleaf Moonwort (Botrychium lanceolatum) Conservation Status Review
    Review Date =
General Description
Plants 5–15 cm. Trophophore dark green to yellow-green, triangular, up to 5 cm long, with 1 to 3 pairs of lobed pinnae; the pinnae ascending and not overlapping. Sporophore 1 to 3 times pinnate, 1 to 2.5 times as long as trophophore. According to Farrar (unpublished) our plants are subspecies lanceolatum, although Lesica (2012) indicates that subspecies lanceolatum and the putatively eastern subspecies angustisegmentum are difficult to separate (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX; Donald Farrar (Iowa State Univeristy; unpublished manuscript)).

Species Range

Range Comments
In MT in the western third east to Park County; AK to MT south to AZ, and NM (Donald Farrar, Iowa State University, unpublished ms).

Observations in Montana Natural Heritage Program Database
Number of Observations: 74

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density



(Observations spanning multiple months or years are excluded from time charts)

In a variety of habitats from wet to moist, grassy and rocky slopes, meadows, woods, roadsides, and edges of lakes, generally at fairly high elevations.

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Citation for data on this website:
Lanceleaf Moonwort — Botrychium lanceolatum.  Montana Field Guide.  .  Retrieved on , from