Polygonaceae: Polygonum ssp Published by Judith Elaine Bush August 30th, 2017 http://www.namethatplant.net/4DCGI/Query?scientificname=polygonumSee also Edible: http://homeguides.sfgate.com/ladys-thumb-edible-90107.html (Polygonum persicaria)Comparisons & photos:https://fieldbioinohio.blogspot.com/2012/04/few-smartweeds.htmlhttps://florapittsburghensis.wordpress.com/2015/07/20/oriental-ladys-thumb-polygonum-cespitosum/Download PDF /link/polygonaceae-polygonum-ssp-bulletin-41-a-guide-to-aquatic-smartweeds-polygonum-of-the-united-states Wildflowers, Flora Clowderwood
