Amaranthus tuberculatus (Moq.) J. D. Sauer
Common Name: WATER-HEMP
Coefficient of Conservatism: 6
Coefficient of Wetness: -5
Wetness Index: OBL
Physiognomy: Nt A-Forb

Wet meadows, shores, stream banks, and swamps.

A striking and extremely variable species in growth form and inflorescence; sometimes nearly 4 m tall in cultivated areas, and sometimes nearly prostrate on newly exposed shores. Plants are male and female, slightly dimorphic, with staminate plants tending to be taller. The tepals of the pistillate flowers are none or reduced, but those of staminate flowers are 5 and well developed. Apparent hybrids with A. retroflexus occasionally occur.


Allegan County
Berrien County
Branch County
Cass County
Clinton County
Eaton County
Genesee County
Gratiot County
Ingham County
Jackson County
Kalamazoo County
Kent County
Lapeer County
Lenawee County
Macomb County
Mecosta County
Monroe County
Muskegon County
Oakland County
Ottawa County
Saginaw County
Shiawassee County
St. Clair County
St. Joseph County
Washtenaw County
Wayne County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. May 6, 2021.