Delaware Wildflowers • Scientific names
Bidens polylepis
Tick-seed SunflowerAsteraceae — Aster family
Invasive native
Lums Pond State Park
September 2001
Lums Pond State Park
November 2003
Guide to Bidens of Delaware
Search Google • Delaware • USDA
Photos copyright David G. Smith
Information from the Delaware Flora Checklist used with author's permission.