Short-rune stable matchings between bees and flowers

We address the problem of short-run correspondence between been pollinators and plant flowers in nature. We prove the existence of stable matchings and provide necessary conditions which allow computation of equilibria. The model predicts, when enforced by some long-run equilibrium conditions, the following two important biological phenomena: 1. 1. In equilibrium, long-proboscis bees generally avoid open flowers (short-tube flowers). 2. 2. Long-tube flowers generally have a much higher reward than open flowers. Observing that flower-tube length is generally positively correlated with flower size, one may deduce that bigger flowers have more nectar reward.