Periclesia flexuosa A. C. Smith, Contr. U. S. Nat. Herb. 28: 357. pl. 7. 1932.
The species upon which the genus Periclesia was founded is also seen to be inseparable from Ceratostema, in view of subsequently described species of the complex. The 4-merous flowers and connate filaments can now hardly be considered of generic significance. The species remains known only from the type, Lobb 79, of which the precise locality is uncertain.