Amaranthus crispus crisp amaranth Amaranthaceae AMCR*; NY, bl (Stalter and Tang 2002); Q (DeCandido 2001);

   

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. 3 vols. Charles Scribner's Sons, New York. Vol. 2: 5.

Amaranthus crispus. USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. 3 vols. Charles Scribner’s Sons, New York. Vol. 2: 5. (Accessed 8/2017).

Amaranthus crispus  is an annual C4 herb (Costea and Tardif 2003), 20-60 cm, stem prostrate, much branched. 

Leaves alternate, numerous, blade 0.5-1.5 cm long, egg-shaped to oblong, tip pointed to rounded, margin irregularly wavy (crisped). 

Flowers inconspicuous, 0.1 cm, sepals linear, minutely bristle-tipped (use lens); inflorescences in leaf axils, 0.3-1 cm long. 

Fruit dry, 1-seeded, flattened, to 0.2 cm. 

Wetland status: UPL. 

Frequency in NYC: Very infrequent. 

Origin: Argentina. 

Habitat: Open sites, vacant lots, especially near ports.