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Montana Field Guide

Montana Field Guides

Rattlesnake Fern - Botrychium virginianum
Other Names:  Botrypus virginianus


Global Rank: G5
State Rank: S4

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 4

External Links






 
General Description
Plants 10–45 cm. Trophophore sessile, deltoid, pale green, thin, up to 25 cm long with up to 10 pairs of nearly overlapping pinnae, the basal pairs twice pinnate, the apical merely lobed. Sporophore twice pinnate, shorter than to twice the length of trophophore (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
In MT in many of the western mountainous counties east to Park Co.; Eurasia, AK to NL south through most of N. America and into S. America (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 160

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

Recency

 

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



Habitat
Dry to moist forests, woodlands, often near water bodies; valleys, montane (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
  • Additional ReferencesLegend:   View Online Publication
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    • Kelly, D. 1994. Demography and conservation of Botrychium australe, a peculiar, sparse, mycorrhizal fern. New Zealand Journal of Botany 32: 393-400.
    • Lesica, P., M. T. Lavin, and P. F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • Soltis, D. E. and P. S. Soltis. 1986. Electrophoretic evidence for inbreeding in the fern Botrychium virginianum (Ophioglossaceae). American Journal of Botany 73: 588-592.
  • Web Search Engines for Articles on "Rattlesnake Fern"
  • Additional Sources of Information Related to "Adder's-Tongue / Moonworts"
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Citation for data on this website:
Rattlesnake Fern — Botrychium virginianum.  Montana Field Guide.  .  Retrieved on , from