Indian Paintbrush

Photo by Mav and The National Park Service, via Wikimedia Commons
Indian Paintbrush (Castilleja sp.) is a rare plant in Missouri. It often grows in association with the roots of other plants as a commensalistic or parasitic partner. It is now considered a member of the broomrape family (Orobanchaceae) but was formerly considered a figwort. It is commonly pollinated by bees. It is never seen in nurseries or garden centers or home gardens due to its strict growth requirements.