Chamaelirium luteum (revisited) - conservation and cultivation 

Considered endangered or threatened in many states, Chamaelirium luteum or ‘Fairy Wand/False Unicorn Root’ has become somewhat mythical to the modern herbalist. As cultivation can be difficult, it is rarely commercially grown and therefore almost impossible to find on the market. It offers a unique opportunity for exploration and experimentation. Here is the link Joe mentions as worthwhile research (and more in it’s Reference section):
Hill, Steven R. 2006. Conservation Assessment for the Fairy Wand. Illinois Natural History Survey. Division of Biodiversity and Ecological Entomology. core.ac.uk/dow...