Bidens hyperborea: Estuary Beggarticks with Distinctive Floral Features

Taxonomic Classification and Common Names

Bidens hyperborea Greene, commonly known as estuary beggarticks, northern beggar-ticks, or estuary bur-marigold, belongs to the genus Bidens in the family Asteraceae.

External Morphology

Distinguishing characteristics of B. hyperborea include: * Outer Involucral Bracts: Herbaceous and spreading * Disk Corollas: Typically 5-lobed * Capitula: Arched or curved