Pollinator effectiveness in a composite: a specialist bee pollinates more florets but does not move pollen farther than other visitors.
Maureen L PageJennifer L IsonAlison L BewleyKeaton M HolsingerAndrew D KaulKatie E KochKory M KolisStuart WageniusPublished in: American journal of botany (2019)
Andrena helianthiformis is an important pollinator of Echinacea. Variation in reproductive fitness of Echinacea in fragmented habitat may result, in part, from the abundance of this species.