Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Caryophyllales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Polygonum erectum
FAMILY
Polygonaceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Erect Knotweed at Vascular Plants of North Carolina.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Polygonum erectum
FAMILY
Polygonaceae
SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Polygonum erectum
SYNONYMOUS WITH Flora of North America
Polygonum erectum
SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 063-04-002:
Polygonum erectum FAMILY Polygonaceae
SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Polygonum erectum
COMMON NAME:
Erect Knotweed
To see larger pictures, click or hover over the thumbnails.
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USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_poer2_001_lvd
)
Keith Bradley kab_p_erectum_7938
October Richland County SC
Erect, freely branched, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
)
Keith Bradley kab_p_erectum_7938b
October Richland County SC
Sepals green with a narrow yellowish or whitish margin, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
)
Keith Bradley kab_p_erectum_7938c
October Richland County SC
Leaves elliptic to widely lanceolate. Ocreae whitish, membranous, to 1cm long, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Polygonum erectum
FAMILY
Polygonaceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Polygonum erectum
FAMILY
Polygonaceae
SYNONYMOUS WITH
Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Polygonum erectum
SYNONYMOUS WITH
Flora of North America
Polygonum erectum
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 063-04-002:
Polygonum erectum
FAMILY
Polygonaceae
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933, 1938)
Polygonum erectum
4090
Forb
Annual
Habitat: Bottomland forests, streambanks, disturbed areas, open places, per Weakley's Flora
Native to the Carolinas & Georgia
Rare
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.)
LEAVES:
Simple
Alternate
Petioles 3-10mm long
Margins entire
FLOWER:
Summer/Fall
Greenish with a narrow whitish margin
5-parted calyx
Petals absent
Superior ovary
FRUIT:
Summer/Fall
Dark brown
Nutlet
TO LEARN MORE about this plant, look it up in a good book!