Specialized cockroach pollination in the rare and endangered plant Vincetoxicum hainanensis (Apocynaceae, Asclepiadoideae) in China. Vincetoxicum hainanensis

We investigated the floral biology, pollination ecology, pollinia removal and insertion, fruit set following single visits by the most common insects, and the breeding system of V. hainanensis. In addition we reviewed reports of cockroaches as pollinators to other plants occurring in different regions of the world. We compared the reports of floral features associated with cockroach pollination with those of fly and beetle pollination