Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Caryophyllales
WEAKLEY'S FLORA (2/8/20):
Polygonum aviculare ssp. aviculare
FAMILY
Polygonaceae
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Check out EDDMapS.org to see where this has been reported.
Read more about Prostrate Knotweed at Vascular Plants of North Carolina.
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.
)
USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_poav_001_lvd
)
USDA-NRCS PLANTS Database / USDA Wetland flora: Field office illustrated guide pnd_poav_003_lvd
)
Terry Holdsclaw tdh_p_aviculare_aviculare
June Iredell County NC
Sheaths [ocreae] silvery. Plant usually prostrate, sometimes erect, per Newcomb's Wildflower Guide.
)
JK Marlow jkm190903_1211
September Greenville County SC
Much branched, usually trailing radially from the taproot, per Vascular Flora of the Carolinas.
)
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.
)
JK Marlow jkm190903_1215
September Greenville County SC
Viewed from underneath.
)
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
1119
Forb
Annual
Non-native: Eurasia
Documented growing wild in GA NC SC
Uncommon
Look for it in disturbed areas, per Weakley's Flora
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!
- Newcomb's Wildflower Guide p192
- Wildflowers of the Atlantic Southeast p208
- Weeds of Southern Turfgrasses p163