Woodland Horsetail - Equisetum sylvaticum
* (see State Rank Reason below)
MNPS Threat Rank
State Rank Reason (see State Rank above)
Approximately two dozen collections at MONTU from mainly western Montana. Noted as being locally common in the west half of Glacier N.P. in suitable habitat.
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Woodland Horsetail (Equisetum sylvaticum) Conservation Status Review
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Sterile stems annual, 15–70 cm × 2–5 mm with 10 to 18 ridges, green, twice branched, nearly solid. Sheaths green below and medium brown above with teeth often united into a few broad lobes below mid-stem. Fertile stems tan, unbranched in spring, later becoming green and branched. Stobili blunt, 10–30 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)
In MT in the northwestern counties and Gallatin and Stillwater counties; circumboreal to WA, MT, IA, VA (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)
- Additional ReferencesLegend: View Online Publication
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- Lesica, P., M. T. Lavin, and P. F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.