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.
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)
Polygonum aviculare
COMMON NAME:
Prostrate 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_poav_001_lvd
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USDA-NRCS PLANTS Database / USDA Wetland flora: Field office illustrated guide pnd_poav_003_lvd
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Terry Holdsclaw tdh_p_aviculare_aviculare
June Iredell County NC
Sheaths [ocreae] silvery. Plant usually prostrate, sometimes erect, per Newcomb's Wildflower Guide.
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JK Marlow jkm190903_1211
September Greenville County SC
Much branched, usually trailing radially from the taproot, per Vascular Flora of the Carolinas.
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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.
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JK Marlow jkm190903_1215
September Greenville County SC
Viewed from underneath.
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JK Marlow jkm190903_1216
September Greenville County SC
Viewed from underneath. Taproot at bottom.