Hale, Mason E., Jr. A monograph of the lichen genus Relicina (Parmehaceae) - Washington : Smithsonian Institution, 1975 - 32 p. : ilus. - Smithsonian contributions to botany ; 26 . - Smithsonian contributions to botany ; 26 . LCCN: 24292 Subjects--Topical Terms: LĂquenes.Parmeliaceas.