Genus: Helianthus

sunflower

Natural variation and hybridization among species make Helianthus a difficult genus. Observation of small flower and fruit parts are necessary. You will need a good hand lens and a ruler with millimeter divisions in order to use this key. Reference: Schilling (2006).

Family

Asteraceae (aster family)

This Genus’s Species in New England:

Visit this genus in the Dichotomous Key