Dig deeper at SERNEC, a consortium of southeastern herbaria.
Check out EDDMapS.org to see where this has been reported.
Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Caryophyllales
Gray's Manual of Botany (Fernald, 1950)
Polygonum aviculare var. aviculare
Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
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Terry Holdsclaw tdh_p_aviculare_aviculare
June Iredell County NC
Leaves blue-green, sheaths silvery. Plant usually prostrate, sometimes erect, per Newcomb's Wildflower Guide.