author keywords: floral reward; foraging preferences; male mating success; mathematical model; pollen donation; pollen packaging; pollen presentation theory; pollinator grooming; pollinator reward preferences

TL;DR: Pollen-rewarding plants can balance conflicting constraints on pollen donation by producing intermediate-sized pollen packages, and Darwin's conjecture that selection should favor increased pollen production in pollen-reWARDing plants is examined. (via Semantic Scholar)