Rorippa palustris (Linnaeus) Besser ssp. palustris . Common name: Marshcress. Phenology: (Mar-) May-Oct. Habitat: Marshes, bogs, seeps. Distribution: ME and NB west to SK, south to FL, TX, ID, and n. South America.
Origin/Endemic status: Native
Synonymy ⓘ: = FNA7, K3, K4, Mi, NY, Va; = Radicula palustris (L.) Moench – S; = Roripa palustris (L.) Besser – S13; = Rorippa islandica (Oeder ex Murray) Borbás – RAB, misapplied; = Rorippa palustris (L.) Besser var. palustris – NE; > Rorippa islandica (Oeder ex Murray) Borbás var. fernaldiana Butters & Abbe – F, G, WV, misapplied; > Rorippa islandica (Oeder ex Murray) Borbás var. islandica – F, G, Tx, misapplied; > Rorippa islandica var. microcarpa (Regel) Fernald – Tat; < Rorippa palustris (L.) Besser – Fl4, GW2, Pa, W, WH3; > Rorippa palustris (L.) Besser ssp. fernaldiana (Butters & Abbe) Jonsell – K1, NcTx, Tn, Al-Shehbaz (1988a); > Rorippa palustris (L.) Besser ssp. glabra (O.E.Schulz) Stuckey var. fernaldiana (Butters & Abbe) Stuckey – GrPl, Stuckey (1972); > Rorippa palustris (L.) Besser ssp. palustris – Al-Shehbaz (1988a); > Rorippa palustris (L.) Besser ssp. palustris var. palustris – Stuckey (1972); > Rorippa palustris (L.) Besser var. fernaldiana (Butters & Abbe) Stuckey – Ar, C, Il, Rollins (1993); > Rorippa palustris (L.) Besser var. palustris – C, Il, Rollins (1993)
Links to other floras: = Rorippa palustris ssp. palustris - FNA7
Wetland Indicator Status:
- Atlantic and Gulf Coastal Plain: OBL (taxonomic split from wetland indicator species)
- Eastern Mountains and Piedmont: OBL (taxonomic split from wetland indicator species)
- Great Plains: OBL (taxonomic split from wetland indicator species)
- Midwest: OBL (taxonomic split from wetland indicator species)
- Northcentral & Northeast: OBL (taxonomic split from wetland indicator species)
Heliophily ⓘ: 7
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Horticultural Information
Intro: Upright to leaning annual/biennial.
Stems: Stems 1 to several from basal rosette, stout, branching, longitudinally ridged, mostly smooth (may be hairy below).
Leaves: Leaves basal and alternate on the stem, petiolate (upper leaves winged to sessile), lance-shaped in outline but toothed to irregularly divided into large terminal lobe and smaller lateral lobes, 2-8 in. long, reduced upward, tinged with red, smooth.
Inforescence:
Flowers: Flowers in racemes at tops of stems and from upper leaf axils, yellow, 1/8-1/4 in. wide, smooth, consisting of 4 petals, 4 sepals, 6 stamens, and an ovary.
Fruits: Fruit a flattened, oval-linear seedpod.
Comments:
Height: 1-4 ft.
plant sale text:
bloom table text:
description: Upright to leaning annual/biennial.
stems: Stems 1 to several from basal rosette, stout, branching, longitudinally ridged, mostly smooth (may be hairy below).
leaves: Leaves basal and alternate on the stem, petiolate (upper leaves winged to sessile), lance-shaped in outline but toothed to irregularly divided into large terminal lobe and smaller lateral lobes, 2-8 in. long, reduced upward, tinged with red, smooth.
inflorescence:
flowers: Flowers in racemes at tops of stems and from upper leaf axils, yellow, 1/8-1/4 in. wide, smooth, consisting of 4 petals, 4 sepals, 6 stamens, and an ovary.
fruits: Fruit a flattened, oval-linear seedpod.
comments:
cultural notes:
germination code:
native range: