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- A synopsis of the lichen genus Xanthoparmelia (Vainio) Hale (Ascomycotina, Parmeliaceae), Mason E. Hale
- Morden-Smithsonian Expedition to Dominica: the lichens (Thelotremataceae), [by] Mason E. Hale, Jr
- A monograph of the lichen genus Parmelia Acharius sensu stricto (Ascomycotina, Parmeliaceae), Mason E. Hale, Jr
- Morden-Smithsonian Expedition to Dominica, the lichens (Parmeliaceae), Mason E. Hale, Jr
- A monograph of the lichen genus Bulbothrix Hale (Parmeliaceae), Mason E. Hale, Jr
- Morden-Smithsonian Expedition to Dominica, the lichens (Thelotremataceae), Mason E. Hale, Jr
- Morden-Smithsonian Expedition to Dominica, the lichens (Parmeliaceae), Mason E. Hale, Jr
- Fine structure of the cortex in the lichen family Parmeliaceae viewed with the scanning-electron microscope, [by] Mason E. Hale, Jr
- A monograph of the lichen genus Relicina (Parmeliaceae), Mason E. Hale, Jr
- Fine structure of the cortex in the lichen family Parmeliaceae viewed with the scanning-electron microscope, Mason E. Hale, Jr
- A monograph of the lichen genus Parmelina Hale (Parmeliaceae), Mason E. Hale, Jr
- A revision of the lichen genus Hypotrachyna (Parmeliaceae) in tropical America, Mason E. Hale, Jr
- A revision of the lichen genus Hypotrachyna (Parmeliaceae) in tropical America, Mason E. Hale, Jr
- A monograph of the lichen genus Pseudoparmelia Lynge (Parmeliaceae), Mason E. Hale, Jr
- A monograph of the lichen genus Relicina (Parmeliaceae), Mason E. Hale, Jr
- A revision of the lichen family Thelotremataceae in Panama, Mason E. Hale, Jr
- A monograph of the lichen genus Pseudoparmelia Lynge (Parmeliaceae), Mason E. Hale, Jr
- A synopsis of the lichen genus Xanthoparmelia (Vainio) Hale (Ascomycotina, Parmeliaceae), Mason E. Hale
- A revision of the lichen genus Hypotrachyna (Parmeliaceae) in tropical America, Mason E. Hale, Jr
- A monograph of the lichen genus Relicina (Parmeliaceae), Mason E. Hale, Jr
- A monograph of the lichen genus Parmelia Acharius sensu stricto (Ascomycotina, Parmeliaceae), Mason E. Hale, Jr
- A monograph of the lichen genus Parmelina Hale (Parmeliaceae), Mason E. Hale, Jr
- Fine structure of the cortex in the lichen family Parmeliaceae viewed with the scanning-electron microscope, Mason E. Hale, Jr
- A monograph of the lichen genus Bulbothrix Hale (Parmeliaceae), Mason E. Hale, Jr
- Morden-Smithsonian Expedition to Dominica, the lichens (Thelotremataceae), Mason E. Hale, Jr
- A revision of the lichen family Thelotremataceae in Panama, Mason E. Hale, Jr