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Austrian Yellowcress - Rorippa austriaca
Other Names:  Austrian Fieldcress

Non-native Species

Global Rank: GNR
State Rank: SNA

Agency Status
MNPS Threat Rank:
C-value: 1

External Links

General Description
Perennial, spreading by horizontal roots or stolons. Stems erect to ascending, 40–80 cm. Leaves basal and cauline; the basal rosette present only the first year; stem leaves 3–11 cm long, oblanceolate, strongly dentate, auriculate-clasping, sessile. Vestiture of sparse, simple hairs below, glabrous above. Petals yellow, 1–2 mm long. Fruit mostly sterile, ovoid silicles 1–2 mm long; the fertile ca. 3 mm long, glabrous; style 0.5–1 mm long; pedicels ascending, 7–10 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
Collected in Jefferson and Park counties; sporadically introduced throughout temperate North America, native to Europe (Lesica 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)


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:
Austrian Yellowcress — Rorippa austriaca.  Montana Field Guide.  .  Retrieved on , from