Amaranthus retroflexusL.
accepted no accepted
Redroot Amaranth, Rough Pigweed, Redroot


CAYUGA FLORA (1926) NOTES: A weed of cultivated fields and waste places, in various rich soils if not too heavy ; very common. July 20-Sept. Widely distributed in N. A. except in the Far North. Naturalized from tropical Am.

BH SPECIMENS FOR Amaranthus retroflexus (this list may be incomplete)
 Ithaca, Cornell University campus, Plant Breeding Garden and Cornell Test Gardens, 1955, anonymous (BH 217957);
 without locality, annual, Summer 1932, Curtis 1301 (BH 67646);
 Town of Dryden, 107 Neimi Road, Five Wells Nature Preserve, north of log house in north vegetable garden, 18 Aug 2005, Dilger WCD2141 (BH 113123);
 Town of Dryden, 107 Neimi Road, Five Wells Nature Preserve, Fivewellsania, north garden, 2 Sep 1990, Dilger WCD1104 (BH 113396);
 Ithaca, Dilmun Hill Student Farm at Cornell University, at the market garden near the fence separating Dilmun and the Orchards, herbaceous plant, ca. 40 cm tall, 30 Sep 2012, Hathaway 10 (BH 96290);   VEmap  GOOmap
 Ithaca, fields, Aug 1875, anonymous (BH 12399);
 Ithaca, Sep 1879, anonymous (BH 12394);
 Ithaca, Cornell University Campus, in greenhouse, growing as a weed, 18 Sep 1936, Allen 3659 (BH 12401);
 near Caroline Center, yard of old farmhouse, 8 Oct 1933, Allen 18317 (BH 12403);
 Ithaca, 24 Oct 1919, Bailey (BH 12404);
 Ithaca, Cornell University campus, Plant Breeding Garden, 3 Sep 1917, Bechtel 8057 (BH 12391);
 Ithaca, Lighthouse Road, city dump, 22 Sep 1921, Burnham & Wilson 13949 (BH 12395);
 Ithaca, Sep 1875, Dudley 735 (BH 12400);
 Ithaca, Cornell University campus, north of Forestry Building, waste soil, 26 Aug 1913, Palmer 442 (BH 12405);
 Ithaca, Cornell University Campus, north of Forestry Building, 26 Aug 1913, Palmer 442 (BH 12402);
 Ithaca, Cornell University campus, Cornell Plantations (Botanic Gardens), herbaceous annual, erect, ca. 30 cm height, 17 Sep 2002, Stolfi (BH 12393);
 Ithaca, Railroad Avenue, 2 Aug 1904, Wiegand & Cipperly (BH 12406);


Amaranthus retroflexus