Characteristics
Dicots
Amaranthus retroflexus L.
Redroot Amaranth; Redroot Pigweed
forb
0
**
Native
AGCP (FAC), EMP (FACU) (NWPL)
TN[SNA] KY[SNA] (State Rank)
G5 (Global Rank)
Anther Type
Dorsifixed
Armaments
No
Base Flower Color
Green
Carpel Number/Pistil
3
Duration
Annual
Fruit Dehiscence
Yes
Fruit Type
Utricle
Fruit Wet/Dry
Dry
General Ecology
Terrestrial
Growth Habit
forb
Inflorescence Position
axillary; terminal
Inflorescence Types
panicle
Leaf Arrangement
alternate
Leaf Complexity
simple
Leaf Dissection
0
Leaf Duration
deciduous
Leaf Fragrance
No
Leaf Petiole Type
petiolate
Leaf Type
broadleaf
Leaf Venation
pinnate
Leaflet Margins
entire
Leaflet Number
0
Moisture Requirements
Xeric; Mesic
Natural Area Presence
GRSM; SM
Ovary Position
Superior
Overall Flower Symmetry
Actinomorphic
Ovules per Carpel
1
Parent Rock
Calcareous; Limestone
Perianth Present
Yes
Petal Fusion
No
Petal Number
0
Pistil Complexity
Compound
Pistil Number
1
Placentation Type
Basal
Sepal Fusion
No
Sepal Number
5
Soil Composition
Mineral
Soil pH
Alkaline
Stamen Number
3; 4; 5
Tepal Fusion
No
Tepal Number
5
Unconsolidated Rock
Yes
Woody Herbaceous
Herbaceous
Classification
Caryophyllales
Amaranthus retroflexus L. - Redroot Amaranth; Redroot Pigweed
Species Distribution Map
This species has been reported in the counties highlighted in the interactive distribution map below. Click on a county to display its name.
Click the question mark icon ( ) to view additional information about the ecoregions shown. In the map legend, there are links to toggle the visibility of the ecoregions and/or their labels. In addition, clicking on an ecoregion name will highlight that region on the map.
Ecoregions
Southeastern Plains
-
Blackland Prarie
Blue Ridge Mountains
Ridge and Valley
Cumberland Plateau
Cumberland Mountains
Allegheny Plateau
Interior Plateau
-
Bluegrass Region
Nashville Basin
Pennyroyal Karst Plain
Western Highland Rim
Eastern Highland Rim
Interior River Valleys and Hills
-
Shawnee / Caseyville Hills
Mississippi Alluvial Plain
Mississippi Valley Loess Plains
Synonyms
Synonym
Full Citation
Basionym
Type
No synonyms found
Specimens and Distribution
Click on an Accession Number to view additional details about the specimen.
Range of years during which specimens were collected:
Accession No.
Country
State
County
Collection Date
Collector & Collection No
Herbarium & Herbarium Name Used
Notes
Image
No specimens found