… (plant medicine) for endangered native bees when they appear during … of species of native bees in Canada that have co- … evolved biologically with native plants … agricultural development threatens not only native bees’ future, but ours. …… (plant medicine) for endangered native bees when they appear during … of species of native bees in Canada that have co- … evolved biologically with native plants … agricultural development threatens not only native bees’ future, but ours. …