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Montana Field Guide

Montana Field Guides

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: 4

(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)


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Citation for data on this website:
Austrian Yellowcress — Rorippa austriaca.  Montana Field Guide.  .  Retrieved on , from