|University of California, Berkeley|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
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|Family: Brassicaceae (Cruciferae)||View Description||Dichotomous Key|
|Genus: Rorippa||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Rorippa columbiae (S. Watson) Howell
Habit: Perennial herb, soft-hairy, roots creeping. Stem: +- erect or decumbent to prostrate, branched distally, 1--3.2(4) dm. Leaf: basal 0; mid-cauline 2.4--5.2 cm, short-petioled or sessile, lobed or not at base, oblanceolate to oblong, wavy to pinnately lobed, lateral lobes generally to midrib, oblong to ovate, entire or dentate; most distal cauline lobed at base. Inflorescence: elongated. Flower: sepals ascending, 2--3.5 mm, oblong, hairy, persistent; petals 2.7--4.2 mm, 0.7--1.7 mm wide, oblanceolate to spoon-shaped. Fruit: silicle, (1.5)2.5--5.5(7) mm, (1)1.7--2.8(3.5) mm wide, +- spheric to oblong-ellipsoid; valves densely hairy; style 0.7--3.2 mm; pedicels ascending, +- appressed, (3)4--10(12) mm, slender, densely hairy. Seed: 24--40, 0.7--0.9 mm, ovoid-spheric.
Ecology: Streambanks, lake or pond margins, meadows, wet fields; Elevation: 1000--1800 m. Bioregional Distribution: MP; Distribution Outside California: to Washington. Flowering Time: Jun--Aug
eFlora Treatment Author: Ihsan A. Al-Shehbaz
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory
Previous taxon: Rorippa austriaca
Next taxon: Rorippa curvipes
Citation for this treatment: Ihsan A. Al-Shehbaz 2016. Rorippa columbiae, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=41577, accessed on April 30, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on April 30, 2016.