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Montana Field Guide

Montana Field Guides

Scarlet Pimpernel - Anagallis arvensis
Other Names:  Blue-scarlet Pimpernel, Red Pimpernel, Red Chickweed, Poor Man's Barometer, Poor Man's Weather-glass, Lysimachia arvensis

Non-native Species

Global Rank: GNR
State Rank: SNA
C-value: 1

Agency Status


External Links

General Description
Glabrous annual. Stems ascending, prostrate, rooting at basal nodes, 5–40 cm, 4-angled. Leaves opposite, sessile, 9–15 mm long, ovate, rounded at the tip. Inflorescence: flowers solitary from leaf axils; pedicels ascending at first, then recurved, 1–3 cm long. Flowers salmon-colored, rotate; corolla united only at the base, 5–8 mm across, ciliate; sepals linear-lanceolate, 2–4 mm long; filaments hairy. Capsules globose, 3–5 mm across, circumcissile (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
Collected once in Gallatin County; introduced throughout most of temperate North America, and native to Eurasia (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 3

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



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

Mostly in wet places and often in sandy soil.


  • Literature Cited AboveLegend:   View Online Publication
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Adhikari, S. 2018. Impacts of dryland farming systems on biodiversity, plant-insect interactions, and ecosystem services. Ph.D. Dissertation. Bozeman, MT: Montana State University. 207 p.
  • Web Search Engines for Articles on "Scarlet Pimpernel"
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Citation for data on this website:
Scarlet Pimpernel — Anagallis arvensis.  Montana Field Guide.  .  Retrieved on , from