Persicaria pensylvanica (Linnaeus) M. Gómez. Common name: Pinkweed, Common Smartweed, Pennsylvania Smartweed. Phenology: May-Dec. Habitat: Disturbed areas, bottomlands. Distribution: NL (Newfoundland), ON, MT, and CA, south to FL, TX, AZ, and to c. Mexico; disjunct (perhaps only introduced?) in AK, Ecuador, Europe.
Origin/Endemic status: Native
Synonymy ⓘ: = Ar, Can, FNA5, K4, Mex, Mi, Mo3, NE, NY, Pa, Tn, Tx, Va; = Persicaria pennsylvanica (L.) M.Gómez — S, S13, orthographic variant; = Polygonum pensylvanicum L. — C, GW2, NcTx, RAB, W, WH3, WV, Horton (1972); < Persicaria pensylvanica (L.) M.Gómez — Fl4; > Persicaria pensylvanica (L.) M.Gómez var. dura (Stanford) C.F.Reed — Il; > Persicaria pensylvanica (L.) M.Gómez var. laevigata (Fernald) Mohlenbr. — Il; > Persicaria pensylvanica (L.) M.Gómez var. pensylvanica — Il; > Polygonum pensylvanicum L. var. durum Stanford — F; > Polygonum pensylvanicum L. var. eglandulosum Myers — F; > Polygonum pensylvanicum L. var. laevigatum Fernald — F, Tat; > Polygonum pensylvanicum L. var. nesophilum Fernald — F; > Polygonum pensylvanicum L. var. pensylvanicum — F, Tat; > Polygonum pensylvanicum L. var. rosaeflorum Norton — F. Basionym: Polygonum pensylvanicum L. 1753
Links to other floras: = Persicaria pensylvanica - FNA5
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Wetland Indicator Status:
- Atlantic and Gulf Coastal Plain: FACW
- Eastern Mountains and Piedmont: FACW
- Great Plains: FACW
- Midwest: FACW
- Northcentral & Northeast: FACW
Heliophily ⓘ: 7
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Horticultural Information
Intro: Erect to sometimes prostrate annual of bottomlands, tidal freshwater marshes, depression ponds, wet fields and ditches.
Stems: Stems slightly zigzagged, simple or branched, smooth below and hairy to glandular hairy above.
Leaves: Leaves alternate, petiolate with a membranous sheath (ocrea) where petiole joins stem, lance-shaped, to 7 in. long, often with a reddish blotch and with hairy margins.
Inforescence:
Flowers: Flowers in dense, cylindric spikes on glandular stalks from leaf axils; pink to purplish; less than 1/4 in. wide; consisting of 5 tepals that are usually closed.
Fruits:
Comments:
Height: 1-2 ft.
plant sale text:
bloom table text:
description: Erect to sometimes prostrate annual of bottomlands, tidal freshwater marshes, depression ponds, wet fields and ditches.
stems: Stems slightly zigzagged, simple or branched, smooth below and hairy to glandular hairy above.
leaves: Leaves alternate, petiolate with a membranous sheath (ocrea) where petiole joins stem, lance-shaped, to 7 in. long, often with a reddish blotch and with hairy margins.
inflorescence:
flowers: Flowers in dense, cylindric spikes on glandular stalks from leaf axils; pink to purplish; less than 1/4 in. wide; consisting of 5 tepals that are usually closed.
fruits:
comments:
cultural notes:
germination code:
native range:
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