TY  - BOOK
AU  - Hale,Mason E.
TI  - A monograph of the lichen genus Pseudoparmelia Lynge (Parmeliaceae)
PY  - 1976///
CY  - Washington
PB  - Smithsonian Institution Press
KW  - Pseudoparmelia
N1  - Includes bibliographical references : (p. 58-60) and index
ER  -