Called “bur-marigolds” in GBIF
Bidens is a genus of flowering plants in the aster family, Asteraceae. The genus include roughly 230 species which are distributed worldwide. Despite their global distribution, the systematics and taxonomy of the genus has been described as complicated and unorganized. The common names beggarticks, black jack, burr marigolds, cobbler's pegs, Spanish needles, stickseeds, tickseeds and tickseed sunflowers refer to the fruits of the plants, most of which are bristly and barbed. The generic name refers to the same character; Bidens comes from the Latin bi ("two") and dens ("tooth").
From Wikipedia, licensed under CC BY-SA 4.0
If you've noticed small yellow, drooping flowers along a ditch or pond edge lately, you're likely...
Weedy roadside plants you walk past every day — like black-jack and fleabane — may be quietly pul...
Every article on Plant News that mentions a member of this genus, newest first.
Nodding beggarticks, a native wetland wildflower, is having a big moment on iNaturalist with 212 verified sightings logged in a single week, signaling its peak late-summer bloom across its range.
Weedy roadside plants you walk past every day — like black-jack and fleabane — may be quietly pulling toxic metals out of...
