American fern journal - American Fern Society. (American Fern Society, 1925)

American fern journal - American Fern Society. (American Fern Society, 1925)

American fern journal - American Fern Society. (American Fern Society, 1972)

American fern journal - American Fern Society. (American Fern Society, 1980)

Arnaldoa : revista del Herbario HAO - Herbario HAO. (Universidad Antenor Orrego de Trujillo, 2010)

Catalogue of the vascular plants of Ecuador = Catálogo de las plantas vasculares del Ecuador - González, Amada Pedroni. (Missouri Botanical Garden Press, 1999)

Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 2000)

A dictionary of plant names - Hollandsche Maatschappij der Wetenschappen (M. Nijhoff, 1911)

The Fern gazette - British Pteridological Society. (British Pteridological Society, 1991)

The Fern gazette - British Pteridological Society. (British Pteridological Society, 1991)

Fieldiana Botany - Field Museum of Natural History. (Chicago Natural History Museum, 1981)

Fieldiana Botany - Field Museum of Natural History. (Chicago Natural History Museum, 1981)

Fieldiana Botany - Field Museum of Natural History. (Chicago Natural History Museum, 1981)

Fieldiana Botany - Field Museum of Natural History. (Chicago Natural History Museum, 1991)

Fieldiana Botany - Field Museum of Natural History. (Chicago Natural History Museum, 1991)

Fieldiana Botany - Field Museum of Natural History. (Chicago Natural History Museum, 1991)

Index filicum,sive, Enumeratio omnium generum specierumque filicum et Hydropteridum ab anno 1753 ad finem anni 1905 descriptorium : adjectis synonymis principalibus, area geographica, etc - Christensen, Carl, 1872 -1942 (H. Hagerup, 1906)

Index filicum,sive, Enumeratio omnium generum specierumque filicum et Hydropteridum ab anno 1753 ad finem anni 1905 descriptorium : adjectis synonymis principalibus, area geographica, etc - Christensen, Carl, 1872 -1942 (H. Hagerup, 1906)

Plant lists and correspondence - Barkley, Fred A. (Fred Alexander), 1908 -1989 (1949)