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Spreading Yellowcress - Rorippa sinuata
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Native Species Global Rank :
G5
State Rank :
SNR
C-value :
4
Agency Status USFWS :
USFS :
BLM :
External Links
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 ).
Species Range
Montana Range
Range Descriptions
Native
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
(Click on the following maps and charts to see full sized version)
Map Help and Descriptions
Relative Density
Recency
(Observations spanning multiple months or years are excluded from time charts)
Habitat
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 ).
Ecology
POLLINATORS 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).
Stewardship Responsibility
References
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