OF THE CAROLINAS & GEORGIA

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



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 north of Mexico, vol. 5 (2005)

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.

image of Polygonum erectum, Erect Knotweed

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913    pnd_poer2_001_lvd

        

image of Polygonum erectum, Erect Knotweed

Keith Bradley    kab_p_erectum_7938

October    Richland County    SC

Erect, freely branched, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).

image of Polygonum erectum, Erect Knotweed

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).

image of Polygonum erectum, Erect Knotweed

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 north of Mexico, vol. 5
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

 

Find by SCIENTIFIC NAME:

4090

Forb
Annual

Habitat: Bottomland forests, streambanks, disturbed areas, open places, per Weakley's Flora

Native to the Carolinas & Georgia

Rare

map
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!



 


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