OF THE CAROLINAS & GEORGIA

Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Caryophyllales

WEAKLEY'S FLORA (2/8/20):
Polygonum aviculare ssp. aviculare   FAMILY Polygonaceae


SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Polygonum aviculare   FAMILY Polygonaceae

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 063-04-003:
Polygonum aviculare   FAMILY Polygonaceae

INCLUDED WITHIN Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Polygonum aviculare

INCLUDING Gray's Manual of Botany (Fernald, 1950)
Polygonum aviculare var. aviculare

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Polygonum aviculare

 

COMMON NAME:
Prostrate Knotweed


         To see larger pictures, click or hover over the thumbnails.

image of Polygonum aviculare ssp. aviculare, Prostrate Knotweed

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913    pnd_poav_001_lvd

        

image of Polygonum aviculare ssp. aviculare, Prostrate Knotweed

USDA-NRCS PLANTS Database / USDA Wetland flora: Field office illustrated guide    pnd_poav_003_lvd

        

image of Polygonum aviculare ssp. aviculare, Prostrate Knotweed

Terry Holdsclaw    tdh_p_aviculare_aviculare

June    Iredell County    NC

Sheaths [ocreae] silvery. Plant usually prostrate, sometimes erect, per Newcomb's Wildflower Guide.

image of Polygonum aviculare ssp. aviculare, Prostrate Knotweed

JK Marlow    jkm190903_1211

September    Greenville County    SC

Much branched, usually trailing radially from the taproot, per Vascular Flora of the Carolinas.

image of Polygonum aviculare ssp. aviculare, Prostrate Knotweed

JK Marlow    jkm190903_1214

September    Greenville County    SC

Leaves blue-green, lanceolate to elliptic, 1-3cm or less long, per Vascular Flora of the Carolinas.

image of Polygonum aviculare ssp. aviculare, Prostrate Knotweed

JK Marlow    jkm190903_1215

September    Greenville County    SC

Viewed from underneath.

image of Polygonum aviculare ssp. aviculare, Prostrate Knotweed

JK Marlow    jkm190903_1216

September    Greenville County    SC

Viewed from underneath. Taproot at bottom.

 

WEAKLEY'S FLORA (2/8/20):
Polygonum aviculare ssp. aviculare   FAMILY Polygonaceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Polygonum aviculare   FAMILY Polygonaceae

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 063-04-003:
Polygonum aviculare   FAMILY Polygonaceae

INCLUDED WITHIN Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Polygonum aviculare

INCLUDING Gray's Manual of Botany (Fernald, 1950)
Polygonum aviculare var. aviculare

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Polygonum aviculare

 

Search by scientific name:

1119

Forb
Annual

Non-native: Eurasia

Documented growing wild in GA NC SC

Uncommon

Look for it in disturbed areas, per Weakley's Flora

map
Click here to see a more detailed map from University of North Carolina at Chapel Hill Herbarium,

or click here to see a map from SERNEC, a consortium of southeastern herbaria.

 

LEAVES:
Simple
Alternate

FLOWER:
Spring/Summer/Fall
Greenish with a broad white or pink margin
Bisexual
5-parted calyx
Petals absent
Superior ovary

FRUIT:
Spring/Summer/Fall
Reddish-brown
Nutlet

 

TO LEARN MORE about this plant, look it up in a good book!



 


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