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Montana Field Guide

Montana Field Guides

Spreading Yellowcress - Rorippa sinuata

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Native Species

Global Rank: G5
State Rank: SNR
C-value: 4

Agency Status


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General Description
Stems ascending, 10–30 cm. Leaves all cauline, 2–6 cm long, oblanceolate, pinnately lobed and dentate, the apical lobe similar to the lateral, petiolate to sessile above. Vestiture of sparse, globose hairs on stem and lower leaf surfaces. Petals yellow, 3–5 mm long. Fruit an oblong, slightly curved silicle 4–7 × 1.5–2.5 mm, glabrous; style 0.9–1.5 mm long; pedicels spreading, 4–9 mm long (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
BC to ON south to CA, NM, AK and LA (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 6

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Relative Density



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

Moist to wet, sandy or gravelly soil along streams, ponds, lakes; plains, valleys, montane (Lesica et al. 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
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • 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?
    • Boggs, K. W. 1984. Succession in riparian communities of the lower Yellowstone River, Montana. M.S. Thesis. Montana State University, Bozeman, 107 pp.
  • Web Search Engines for Articles on "Spreading Yellowcress"
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Citation for data on this website:
Spreading Yellowcress — Rorippa sinuata.  Montana Field Guide.  .  Retrieved on , from