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Montana Field Guide

Montana Field Guides

Curve-pod Yellowcress - Rorippa curvisiliqua

Native Species

Global Rank: G5
State Rank: SNR

Agency Status
MNPS Threat Rank:
C-value: 4

External Links

General Description
Taprooted annual to biennial. Stems prostrate to ascending, 3–30 cm long, branched with racemes terminal and from upper leaf axils. Leaves basal and cauline; the basal withering early; stem leaves oblanceolate, 1–5 cm long, pinnately lobed to deeply dentate, the terminal lobe largest. Vestiture of sparse, recurved hair on the stem. Petals yellow, 0.6–1.1 mm long, shorter than the sepals. Fruit a linear silique, 7–17 mm long, 0.8–1.5 mm wide, usually hispid on the sutures; style 0.1–0.4 mm long; pedicels spreading to ascending, 1–3 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range

Range Comments
AK south to CA, NV and WY (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 14

(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 along shores of lakes, ponds, streams; montane, subalpine (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 rufocinctus (Thorp et al. 1983).

  • Literature Cited AboveLegend:   View Online Publication
    • Thorp, R.W., D.S. Horning, and L.L. Dunning. 1983. Bumble bees and cuckoo bumble bees of California (Hymenoptera: Apidae). Bulletin of the California Insect Survey 23:1-79.
  • 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:
Curve-pod Yellowcress — Rorippa curvisiliqua.  Montana Field Guide.  .  Retrieved on , from