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Montana Field Guide

Montana Field Guides

Smooth Scouring-rush - Equisetum laevigatum


Global Rank: G5
State Rank: S4
* (see State Rank Reason below)

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

External Links






State Rank Reason (see State Rank above)
Approximately 50 collections at MONTU from mainly western Montana.
 
General Description
Stems monomorphic, hollow, usually unbranched, annual, 20–100 cm × 2-8 mm with 10 to 32 ridges. Sheaths green with a terminal black band, the black teeth quickly deciduous. Strobili 10–20 mm, usually blunt. Stems are lighter green and less leathery than those of Equisetum hyemale (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
Throughout much of MT; BC to QC south to CA, TX, and IL (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 29

(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
Moist grasslands, woodlands, vernally inundated depressions, roadsides; plains, valleys to montane (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Smooth Scouring-rush — Equisetum laevigatum.  Montana Field Guide.  .  Retrieved on , from