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Bidens is a genus of flowering plants in the aster family, Asteraceae. 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, with two sharp pappi at the end. The generic name refers to the same character; Bidens comes from the Latin bis ("two") and dens ("tooth").[3]

Quick facts: Bidens, Scientific classification , Synonyms[...
Bidens pilosa, fruiting head and flower head
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Subfamily: Asteroideae
Tribe: Coreopsideae
Genus: Bidens
  • Ceratocephalus Cass.
  • Campylotheca Cass.
  • Microlecane Sch.Bip. ex Benth. & Hook.f.
  • Diatonta Walp.
  • Microlecana Sch.Bip.
  • Delucia DC.
  • Bidens sect. Eubidens Boerl.
  • Dolichotheca Cass.
  • Forbicina Ség.
  • Edwarsia Neck.
  • Kerneria Moench
  • Ceratocephalus Vaill.
  • Bidens subg. Kerneria Cass.
  • Bidens sect. Adenolepis Boerl.

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