Genus: Bidens — beggar-ticks

Variation in the barbs at the tips of the seeds has been used in some floras to divide several species into varieties. However, variability can be seen within populations or even single plants , and so no varieties based only upon awn differences are recognized in this key. Bidens is closely related to Coreopsis. References: Weedon (1974), Roberts (1982), Haines (2003), Kimball and Crawford (2004).

Family

Asteraceae (aster family)

This genus’s species in New England

• Bidens alba
• Bidens aristosa
• Bidens beckii
• Bidens bipinnata
• Bidens cernua
• Bidens connata
• Bidens discoidea
• Bidens eatonii
• Bidens frondosa
• Bidens hyperborea
• Bidens laevis
• Bidens pilosa
• Bidens polylepis
• Bidens tenuisecta
• Bidens trichosperma
• Bidens tripartita
• Bidens vulgata

Visit this genus in the Dichotomous Key

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