Rattlesnake Fern - Botrychium virginianum
MNPS Threat Rank
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)
In MT in many of the western mountainous counties east to Park County; Eurasia, AK to NL south through most of North America and into S. America (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Observations in Montana Natural Heritage Program Database
Number of Observations:
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(Observations spanning multiple months or years are excluded from time charts)
Dry to moist forests, woodlands, often near water bodies; valleys, montane (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)
- 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.