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Rorippa palustris subsp. fernaldiana (Butters & Abbe) Jonsell   (redirected from: Rorippa palustris var. glabra (O.E.Schultz) R.L.Taylor & B.MacBryde)
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Family: Brassicaceae
Fernald's yellowcress
[Rorippa hispida var. glabrata Lunell, moreRorippa islandica subsp. fernaldiana (Butters & Abbe) Hultén, Rorippa islandica var. fernaldiana Butters & Abbe, Rorippa islandica var. glabra (O.E.Schulz) S.L.Welsh & Reveal, Rorippa islandica var. glabrata (Lunell) Butters & Abbe, Rorippa palustris subsp. glabra (O.E.Schulz) Stuckey, Rorippa palustris var. cernua (Nuttall) Stuckey, Rorippa palustris var. dictyota (Greene) Stuckey, Rorippa palustris var. glabra (O.E.Schultz) R.L.Taylor & B.MacBryde, Rorippa palustris var. glabrata (Lunell) Stuckey]
Rorippa palustris subsp. fernaldiana image
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The Morton Arboretum
Annual or biennial herb with a taproot mostly 40 cm - 1 m tall Stem: stout, upright, branched, mostly over 3 mm thick, sometimes sparsely hairy below. Leaves: alternate, pinnately divided (the lower leaves), lance-shaped to oblong- reverse egg-shaped, upper leaves slightly toothed, thick. The middle stem leaves are generally winged toward the lobed base, looking more or less stalkless. Flowers: in branched clusters (racemes). Sepals four, ascending. Petals four, yellow, 1.5 - 2.5 mm long, about as long as sepals, bases narrowed. Stamens six. Fruit: a pod (silique), 2.5 - 5 mm long, more or less round in cross-section, constricted at the middle.

Similar species: No information at this time.

Flowering: late May to early September

Habitat and ecology: Common in and along streams and ditches. Also found around ponds and in other moist areas.

Occurence in the Chicago region: native

Etymology: Rorippa possibly comes from the Latin roro, meaning "to be moist," and ripa, meaning riverbank. Palustris means "marsh-loving."

Author: The Morton Arboretum

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Rorippa palustris subsp. fernaldiana
Open Interactive Map
Rorippa palustris subsp. fernaldiana image
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