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Brassicaceae
Rorippa

Rorippa palustris (Linnaeus) Besser ssp. palustris. Common name: Marshcress. Phenology: (Mar-) May-Oct. Habitat: Marsh, bog, seep. Distribution: ME and NB west to SK, south to FL, TX, ID, and n. South America.

Glossary (beta!)

Origin/Endemic status: Native

Synonymy ⓘ: = FNA7, 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 (Oeder ex Murray) Borbás var. microcarpa (Regel) Fernald — Tat; < Rorippa palustris (L.) Besser — Fl4, GW2, Pa, W, WH3; > Rorippa palustris (L.) Besser ssp. fernaldiana (Butters & Abbe) Jonsell — 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); Sisymbrium amphibium Linnaeus var. palustre Linnaeus. Basionym: Sisymbrium amphibium L. var. palustre L. 1753

Links to other floras: = Rorippa palustris ssp. palustris - FNA7

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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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image of plant© Erik Danielson source | Original Image ⭷
image of plant© Michael John Oldham, some rights reserved (CC BY-NC), uploaded by Michael John Oldham source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© Grzegorz Grzejszczak, some rights reserved (CC BY-SA), uploaded by Grzegorz Grzejszczak source CC-BY-SA | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© Michael John Oldham, some rights reserved (CC BY-NC), uploaded by Michael John Oldham source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Radford, Ahles and Bell | Original Image ⭷

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Horticultural Information

NCBG trait

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:



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