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Ludwigia alternifolia Linnaeus. Section: Ludwigia. Common name: Alternate-leaved Seedbox. Phenology: May-Oct. Habitat: Freshwater tidal marshes, ditches, other marshes, open wet places, disturbed wet places. Distribution: MA west to s. ON, s. MI, IA, and KS, south to n. FL and e. TX.

Origin/Endemic status: Native

Synonymy ⓘ: = Ar, Fl4, FNA10, G, GrPl, GW2, K4, Mi, Mo3, NcTx, NE, NY, Pa, RAB, S, S13, Tat, Tn, Tx, Va, W, WH3, Wagner, Hoch, & Raven (2007); > Ludwigia alternifolia L. var. alternifolia — C, F, Il, WV; > Ludwigia alternifolia L. var. linearifolia Britton — F, WV; > Ludwigia alternifolia L. var. pubescens E.J.Palmer & Steyerm. — C, F, Il. Basionym: Ludwigia alternifolia L. 1753

Links to other floras: = Ludwigia alternifolia - FNA10

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: OBL
  • Eastern Mountains and Piedmont: FACW
  • Great Plains: OBL
  • Midwest: OBL
  • Northcentral & Northeast: OBL

Heliophily ⓘ: 8

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image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Richard & Teresa Ware CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Scott Ward | Original Image ⭷
image of plant© Bruce A. Sorrie | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© Emily Oglesby | Original Image ⭷
image of plant© Emily Oglesby | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Collectors SOS | Original Image ⭷

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Horticultural Information

NCBG trait

Intro: Erect perennial of freshwater tidal marshes and other open wet places, including ditches.

Stems: Stems widely branched, reddish-tinged, smooth or hairy.

Leaves: Leaves alternate, tapering to a short (or no) petiole, lance-shaped, 2-4 in. long, smooth or hairy.

Inforescence:

Flowers: Flowers solitary on short stalks from upper leaf axils, bright-yellow, about ½ in. wide, consisting of 4 rounded petals that soon drop, leaving 4 oval-triangular sepals nearly as long as the petals.

Fruits: Fruit a distinctive box-shaped capsule with a tiny pore at top; splits open when ripe, releasing numerous tiny seeds.

Comments:

Height: 2-4 ft.

plant sale text:

bloom table text:

description: Erect perennial of freshwater tidal marshes and other open wet places, including ditches.

stems: Stems widely branched, reddish-tinged, smooth or hairy.

leaves: Leaves alternate, tapering to a short (or no) petiole, lance-shaped, 2-4 in. long, smooth or hairy.

inflorescence:

flowers: Flowers solitary on short stalks from upper leaf axils, bright-yellow, about ½ in. wide, consisting of 4 rounded petals that soon drop, leaving 4 oval-triangular sepals nearly as long as the petals.

fruits: Fruit a distinctive box-shaped capsule with a tiny pore at top; splits open when ripe, releasing numerous tiny seeds.

comments:

cultural notes:

germination code:

native range: eastern North America



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