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Montana Field Guide

Montana Field Guides

Woodland Horsetail - Equisetum sylvaticum


Global Rank: G5
State Rank: S3S4
* (see State Rank Reason below)

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 5

External Links






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.
 
General Description
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).

Species Range
Present
 


Range Comments
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).

Summary of Observations Submitted for Montana
Number of Observations: 5

(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
Wet meadows, marshes, ponds, along forested streams; valleys to subalpine (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Woodland Horsetail — Equisetum sylvaticum.  Montana Field Guide.  .  Retrieved on , from