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Montana Field Guide

Montana Field Guides

Brook-pimpernell - Veronica anagallis-aquatica
Other Names:  Blue Water Speedwell, Water Speedwell, Veronica catenata

Non-native Species

Global Rank: G5
State Rank: SNA

Agency Status
MNPS Threat Rank:
C-value: 0

External Links

General Description
Rhizomatous perennial. Stems ascending, simple or branched, 10–50 cm. Herbage glabrous. Leaves sessile, 2–6 cm long, lanceolate, crenate, the upper clasping. Inflorescence glabrous to sparsely glandular-pubescent, axillary racemes; pedicels 3–7 mm long. Flowers: calyx 2–3 mm long; corolla blue, 3–5 mm across; style 2–3 mm long. Capsule obovoid, 2–4 mm long, glabrous, barely notched (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Lesica (2012) treats V. catenata as a distinct species.

Species Range
Montana Range


Range Comments
Introduced to most of North America; native to Eurasia (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 29

(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)

Mud or shallow water along streams, rivers, lakes; plains, valleys (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

The following animal species have been reported as pollinators of this plant species or its genus where their geographic ranges overlap: Bombus vagans and Bombus pensylvanicus (Colla and Dumesh 2010).


  • Literature Cited AboveLegend:   View Online Publication
    • Colla, S.R. and S. Dumesh. 2010. The bumble bees of southern Ontario: notes on natural history and distribution. Journal of the Entomological Society of Ontario 141: 39-68.
  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
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Citation for data on this website:
Brook-pimpernell — Veronica anagallis-aquatica.  Montana Field Guide.  .  Retrieved on , from