| Author | S. Watson | |
| Distribution | Scattered locations in the lower Piedmont and upper Coastal Plain; also Catawba and Alleghany counties.
Native of Mexico; in N.A. mostly in the southern states, north to CA, UT, NE, WI, Ont., MA. | |
| Abundance | Rare to locally uncommon (near the SC border). Likely overlooked, however. | |
| Habitat | Cropfields, roadsides, fields, mulched shrub bed. | |
| Phenology | Flowering and fruiting August-October. | |
| Identification | Palmer's Amaranth is erect and grows 1.5-5 feet tall (reportedly more). The leaves are long-stalked, the blades rhombic to elliptic. The plants are either male or female. The inflorescences are long (sometimes 1 foot long), terminal spikes that eventually curve or droop. Each flower has 5 tepals. A. tuberculatus is similar but only has 1-2 tepals. | |
| Taxonomic Comments | | |
| Other Common Name(s) | | |
| State Rank | SE | |
| Global Rank | G5 | |
| State Status | | |
| US Status | | |
| USACE-agcp | FACU link |
| USACE-emp | FACU link |
