Amaranthus retroflexus

Family:AMARANTHACEAE
Species:Amaranthus retroflexus L.
Common Name:Red Root Amaranth; Red Root Pigweed; Rough Pigweed
Habitat:Disturbed areas. Fields, roadsides, along railroad tracks.
Associated Ecological Communities:**
Growth Habit:Herb
Duration:Annual
Category:Vascular
USDA Symbol:AMRE
Plant Notes:**
Taxonomic Notes:**
Status:Not Native, FAC- (NWI)
References:**
Specimen: View specimen details in the Alabama Herbarium Consortium Specimen Database

** Not applicable or data not available.

Classification

FamilyAMARANTHACEAE - Amaranth family
Genus Amaranthus
Species Amaranthus retroflexus L. - Red Root Amaranth; Red Root Pigweed; Rough Pigweed

Citation

Citation Amaranthus retroflexus Linnaeus, Sp. Pl. 2: 991. 1753.
Basionym: **
Type: USA: PENNSYLVANIA: Without data, Kalm s.n. (lectotype: LINN 1117.22). Lectotypified by C. C. Townsend, in Nasir & Ali, Fl. W. Pakistan 71: 12. 1974.

** Not applicable or data not available.

Synonyms

SynonymFull CitationBasionymType
Amaranthus retroflexus var. genuinus Mitt. Naturf. Ges. Solothurn 6: 26. 1920, nom. inadmiss.Amaranthus retroflexus Linnaeus 1753 
Amaranthus retroflexus forma rubricaulis Mitt. Naturf. Ges. Solothurn 6: 26. 1920.Amaranthus retroflexus Linnaeus, var. rubricaulis Thellung ex Ascherson & Graebner 1914. 
Amaranthus retroflexus var. rubricaulis Syn. Mitteleur. Fl. 5(1): 260. 1914.  
Galliaria retroflexa Amer. Midl. Naturalist 3: 278. 1914.Amaranthus retroflexus Linnaeus 1753. 
Galliaria scabra Fl. Pyren. 1: 187. 1897, nom. illegit.Amaranthus retroflexus Linnaeus 1753. 

Specimens and Distribution

This species has been reported in the following counties by the herbaria listed. An overview of the individual specimens are provided in the table that follows. Click on the accession number to view details; click on column headers to sort; choose a county or herbaria to filter the specimen data.

Counties included on distribution map: Calhoun, Franklin, Jackson, Lauderdale, Madison, Mobile, Morgan

Counties represented by specimen data listed below:

Herbaria represented by specimen data listed below: AMAL, BRIT, JSU, TROY, UNA, UNAF, USAM, UWAL

Range of years during which specimens were collected: -

Barcode / Accession No. County Coll. Date Collector &
Collection No.
Herbarium &
Herbarium Name Used
Image
USAM000000962 Morgan 28 Aug 1969 Kral, Robert
36472
USAM
Amaranthus retroflexus Linnaeus
UNAF0000193 Franklin 29 Sep 1985 Jackson, Carle
s.n.
UNAF
Amaranthus retroflexus Linnaeus
BRIT68705 Jackson 27 Aug 1993 DiPietro, Teresa
292
BRIT
Amaranthus retroflexus Linnaeus
UNA00033215 Mobile _ Sep 1885 Mohr, Charles
s.n.
UNA
Amaranthus retroflexus L.
BRIT68704 Lauderdale 06 Nov 1980 Kral, Robert
66575
BRIT
Amaranthus retroflexus Linnaeus
UNA00033220 Mobile Aug - Sep Mohr, Charles
s.n.
UNA
Amaranthus retroflexus L.
JSU113813 Morgan 31 May 1974 Whetstone, R. David
2946
JSU
Amaranthus retroflexus Linnaeus
JSU136721 Calhoun 02 Jul 1996 Spaulding, Daniel D.
9035
JSU
Amaranthus retroflexus Linnaeus
UWAL0053913 Madison 02 Jul 2013 Keener, Brian R.
8013
UWAL
Amaranthus retroflexus L.
TROY000013739 Lauderdale 06 Nov 1980 Kral, Robert
66575
TROY
Amaranthus retroflexus Linnaeus
AMAL00012418 Lauderdale 06 Nov 1980 Kral, Robert
66575
AMAL
Amaranthus retroflexus Linnaeus
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