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
Manual of the Southeastern Flora (Small, 1933)
Click or hover over the thumbnails to see larger pictures.
Keith Bradley kab_p_maculosa_73102
March Miami-Dade County FL
Spikes of flowers upright, per Invasive Plants, Guide to Identification, Impacts and Control.
JK Marlow jkm180828_4298b
August Jackson County NC
Big Ridge Preserve
Bristles of ocreae 0.2-1.3 (-2) mm long, per Weakley's Flora.
COMPARE ocreae of Jumpseed and Smartweed species
Dan Tenaglia, Missouriplants.com, Bugwood.org bug_5350077
Leaves have a purplish triangle in the middle, like a thumbprint, per Invasive Plants, Guide to Identification, Impacts and Control.
Joseph M. DiTomaso, University of California - Davis, Bugwood.org bug_5387579
Leaves often with a triangular reddish blotch in middle of the upper surface, per Weakley's Flora.
Joseph M. DiTomaso, University of California - Davis, Bugwood.org bug_5387580
Similar to P. longiseta, but bristles on the leaf node collars only 2mm long, per Wildflowers of the Sandhills Region.
D. Walters & C. Southwick, USDA APHIS ITP, Bugwood.org bug_5459834
Achenes biconvex or triangular in cross-section, per Weakley's Flora.