Showy Lady Slipper

By Orchidhunter1939 [CC BY-SA 3.0], from Wikimedia Commons
This is Showy Lady's Slipper (Cypripedium reginae), found rarely in Missouri and throughout the northern United States. It is a rare orchid (Orchidaceae) species that is found in moist protected habitats across the country. It has been collected to near extinction in many areas. Bees are one of its known pollinators. It flowers in the spring from May through June in Missouri. It is never seen in garden centers or nurseries, and only in the rarest of gardens.