Amaranthus cannabinus (Linnaeus) J.D. Sauer. Common name: Salt-marsh Water-hemp. Phenology: Jul-Dec. Habitat: Salt, brackish, and freshwater tidal marshes, especially along the banks of tidal guts. Distribution: ME south to ne. FL (Duval County).
ID notes: Extremely variable in size, flowering and fruiting at heights ranging from 3 dm to 4 m tall. The stem can reach 10 cm in diameter at the base.
Origin/Endemic status: Native
Synonymy ⓘ: = C, FNA4, GW2, K1, K3, K4, NE, NY, Pa, RAB, Va, WH3, Sauer (1955); = Acnida cannabina L. – F, G, S, S13, Tat
Links to other floras: = Amaranthus cannabinus - FNA4
Wetland Indicator Status:
- Atlantic and Gulf Coastal Plain: OBL
- Eastern Mountains and Piedmont: OBL
- Northcentral & Northeast: OBL
Heliophily ⓘ: 8
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Horticultural Information
Intro: Erect to reclining, fleshy annual found in salt, brackish, and freshwater tidal marshes, especially along the banks of tidal "guts."
Stems: Stems stout, branched, reddish below, ridged and smooth.
Leaves: Leaves alternate, petiolate, narrowly lance-shaped to linear, 2-6 in. long, smooth.
Inforescence:
Flowers: Flowers in narrow spikes at top of stem and from upper leaf axils, green, 1/8 in. long, with 3 tiny bracts surrounding each flower; male and female flowers separate.
Fruits: Fruit a seed surrounded by a dark reddish-brown, wrinkled membrane.
Comments:
Height: 2-7 ft.
plant sale text:
bloom table text:
description: Erect to reclining, fleshy annual found in salt, brackish, and freshwater tidal marshes, especially along the banks of tidal "guts."
stems: Stems stout, branched, reddish below, ridged and smooth.
leaves: Leaves alternate, petiolate, narrowly lance-shaped to linear, 2-6 in. long, smooth.
inflorescence:
flowers: Flowers in narrow spikes at top of stem and from upper leaf axils, green, 1/8 in. long, with 3 tiny bracts surrounding each flower; male and female flowers separate.
fruits: Fruit a seed surrounded by a dark reddish-brown, wrinkled membrane.
comments:
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