Abstract
Mating system of Meehania montis-koyae, a rare and endangered perennial herb, was studied by crossing experiments for multiple years and study sites. We conclude this species is self-fertile since both selfed and bagged flowers produced considerable fruits. Compare with other treatments (=selfing, crossing, and control), seed set of bagged flowers were significantly low. During the period of the observation the flowers of M. montis-koyae, visits of syrphus flies and small carpenter bees were confirmed but less frequently. Therefore, M. montis-koyae needs pollen vectors for seed production, however, there may be pollen limitation because of insufficient pollinator visits.
