Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Caryophyllales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Amaranthus hybridus ssp. hybridus
FAMILY
Amaranthaceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Smooth Pigweed at Vascular Plants of North Carolina.
INCLUDED WITHIN
PLANTS NATIONAL DATABASE:
Amaranthus hybridus
FAMILY
Amaranthaceae
INCLUDED WITHIN Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Amaranthus hybridus
INCLUDED WITHIN Flora of North America
Amaranthus hybridus
INCLUDED WITHIN Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Amaranthus hybridus
INCLUDED WITHIN VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 066-03-002:
Amaranthus hybridus FAMILY Amaranthaceae
INCLUDED WITHIN Manual of the Southeastern Flora (Small, 1933, 1938)
Amaranthus hybridus
COMMON NAME:
Smooth Pigweed, Smooth Amaranth, Green Amaranth, Slim Amaranth
To see larger pictures, click or hover over the thumbnails.
)
USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_amhy_001_lvd
)
Terry Holdsclaw tdh_a_hybridus_8423
July Iredell County NC
)
Terry Holdsclaw tdh_a_hybridus_8429b
July Iredell County NC
Floral bracts longer than subtended flowers, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
)
JK Marlow jkm130823_494
August Greenville County SC
Swamp Rabbit Trail
Inflorescence branches ascending, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
)
JK Marlow jkm130823_496
August Greenville County SC
Swamp Rabbit Trail
Inflorescences moderately large, usually soft and lax, with spreading branches, per Weakley's Flora.
)
JK Marlow jkm130823_497c
August Greenville County SC
Swamp Rabbit Trail
)
JK Marlow jkm140814_589
August Greenville County SC
Swamp Rabbit Trail
Blade ovate, rhombic-ovate, or lanceolate; petiole half or as long as blade, per Flora of North America.
)
JK Marlow jkm140814_591
August Greenville County SC
Swamp Rabbit Trail
)
JK Marlow jkm140814_597
August Greenville County SC
Swamp Rabbit Trail
)
JK Marlow jkm140922_918
September Greenville County SC
Swamp Rabbit Trail
)
JK Marlow jkm140922_922
September Greenville County SC
Swamp Rabbit Trail
)
Terry Holdsclaw tdh_amaranthus_hybridus
September Iredell County NC
A tall annual, per Weeds of Southern Turfgrasses (Murphy et al., 1992).
)
JK Marlow jkm121013_501
October Greenville County SC
Swamp Rabbit Trail
)
JK Marlow jkm121013_504
October Greenville County SC
Swamp Rabbit Trail
)
JK Marlow jkm121013_507
October Greenville County SC
Swamp Rabbit Trail
)
JK Marlow jkm141025_305
October Greenville County SC
Swamp Rabbit Trail
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Amaranthus hybridus ssp. hybridus
FAMILY
Amaranthaceae
INCLUDED WITHIN
PLANTS NATIONAL DATABASE:
Amaranthus hybridus
FAMILY
Amaranthaceae
INCLUDED WITHIN
Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Amaranthus hybridus
INCLUDED WITHIN
Flora of North America
Amaranthus hybridus
INCLUDED WITHIN
Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Amaranthus hybridus
INCLUDED WITHIN
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 066-03-002:
Amaranthus hybridus
FAMILY
Amaranthaceae
INCLUDED WITHIN
Manual of the Southeastern Flora (Small, 1933, 1938)
Amaranthus hybridus
63
Forb
Annual
Monoecious
Habitat: Disturbed areas, per Weakley's Flora
Native distribution uncertain, but apparently native to eastern US
Common
Click here to see a map, notes, and images from Weakley's Flora of the Southeastern US.
Click here to see a map showing all occurrences known to SERNEC, a consortium of southeastern herbaria. (Zoom in to see more detail.)
IS THE PLANT "ARMED"?
Stems not armed
LEAVES:
Simple
Alternate
Petioles from 1/2 to equal length of blade
Margins entire
FLOWER:
Summer/Fall
Greenish
(rarely purplish)
Unisexual
1-5 sepals (or sepals absent) subtended by 3 bracts
Petals absent
FRUIT:
Summer/Fall
Utricle
TO LEARN MORE about this plant, look it up in a good book!
- Newcomb's Wildflower Guide (Newcomb, 1977) p414
- Wildflowers of the Atlantic Southeast (Cotterman, Waitt, & Weakley, 2019) p461
- Weeds of Southern Turfgrasses (Murphy et al., 1992) p072