Basionym Name:Crocynia rigidula B. de Lesd., in Hue, Bull. Soc. bot. Fr. 71: 331 (1924)
Homotypic synonyms:Lepraria rigidula (B. de Lesd.) Diederich, Trav. Sci. Musée National d'Histoire Naturelle de Luxembourg 14: 152 (1989)Lepraria rigidula (B. de Lesd.) Tønsberg, Sommerfeltia 14: 205 (1992)