francisci (see main article), commonly called Saint Francis' satyr, is found in a single metapopulation in a 10x10 km area of Fort Bragg in North Carolina.
The Psilon is best known as the official unit of measurement during the censusing of plants in the genus Silene (see Silene) in a metapopulation surrounding Mountain Lake Biological Station in Giles County, Virginia.
It is a subspecies of N. mitchellii and is only known from a single metapopulation on Fort Bragg military base in Hoke and Cumberland Counties.