Dig deeper at SERNEC, a consortium of southeastern herbaria.
Check out EDDMapS.org to see where this has been reported.
Common Cocklebur is readily identified by its 1-2cm long, elliptical, tan or light brown fruits that are beset with straight and hooked prickles -- that easily stick to clothing. Read more at Vascular Plants of North Carolina.
Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales
Flora of Virginia (Weakley, Ludwig & Townsend, 2012)
Click or hover over the thumbnails to see larger pictures.
JK Marlow jkm150226_737b
February Pickens County SC
Phyllaries mostly hooked, the whole becoming a hard prickly perigynium (bur), per Flora of North America.
JK Marlow jkm130928_750b
September Spartanburg County SC
Leaf blade broadly ovate to roughly orbicular, base cordate or nearly so, per Wildflowers of the Eastern United States.
Gill Newberry gn10_x_cocklebur
Female flowers enclosed by the involucre, forming a bur w hooked bristles, per Wildflowers of the Eastern United States.