These bluebells appeared in the wildflower garden. It is Mertensia virginica and is also called Virginia cowslip, lungwort oysterleaf, and Roanoke bells.
It flowers with five petals fused into a tube, five stamens, and a central pistil. You may remember that the stamen is the male fertilizing organ of the flower consisting of a pollen containing anther and a filament. The pistil includes the female organs of the flower comprising the stigma, style and ovary.