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 aviculare ssp. aviculare   FAMILY Polygonaceae   Go to FSUS key



SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Polygonum aviculare   FAMILY Polygonaceae

SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)

Polygonum aviculare ssp. aviculare

SYNONYMOUS WITH Flora of North America north of Mexico, vol. 5 (2005)

Polygonum aviculare ssp. aviculare

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

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

USDA / Selected Weeds of the US. 1970    swus_page_117a

        

image of Polygonum aviculare ssp. aviculare, Prostrate Knotweed

USDA / Selected Weeds of the US. 1970    swus_page_117b

        

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 (Newcomb, 1977).

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 (Radford, Ahles, & Bell, 1968).

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 (Radford, Ahles, & Bell, 1968).

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 OF THE SOUTHEASTERN US (4/24/22):
Polygonum aviculare ssp. aviculare   FAMILY Polygonaceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Polygonum aviculare   FAMILY Polygonaceae

SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Polygonum aviculare ssp. aviculare

SYNONYMOUS WITH Flora of North America north of Mexico, vol. 5
Polygonum aviculare ssp. aviculare

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

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

 

Find by SCIENTIFIC NAME:

1119

Forb
Annual

Habitat: Disturbed areas, per Weakley's Flora

Non-native: Eurasia

Uncommon

map
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.

LEAVES:
Simple
Alternate

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

FRUIT:
Spring/Summer/Fall
Reddish-brown
Nutlet

 

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



 


Find by SCIENTIFIC NAME: