American fern journal - American Fern Society. (American Fern Society, 1967)

American fern journal - American Fern Society. (American Fern Society, 1967)

American fern journal - American Fern Society. (American Fern Society, 1967)

American fern journal - American Fern Society. (American Fern Society, 1968)

American fern journal - American Fern Society. (American Fern Society, 1968)

American fern journal - American Fern Society. (American Fern Society, 1968)

American fern journal - American Fern Society. (American Fern Society, 1978)

American fern journal - American Fern Society. (American Fern Society, 2011)

Archivos do Museu Nacional do Rio de Janeiro - Museu Nacional (Brazil) ([Cysneiros & Cia, 1958)

bao zi zhi wu ming cheng - Zhongguo ke xue yuan bian yi ju (zhong guo ke xue yuan chu ban, 1955)

bao zi zhi wu ming cheng - Zhongguo ke xue yuan bian yi ju (zhong guo ke xue yuan chu ban, 1955)

Bibliografía sobre gametofitos de helechos y plantas afines, 1699-1996 - Riba, Ramón (Missouri Botanical Garden Press, 1998)

The British fern gazette - British Pteridological Society. (British Pteridological Society, 1909)

dong hai lu jia pen di long jing gou zao dai xin sheng dai bao fen xue de yan jiu - Zhongguo ke xue yuan. Nanjing di zhi gu sheng wu yan jiu suo bian ji (an hui ke xue ji shu chu ban she, 1985)

The Fern gazette - British Pteridological Society. (British Pteridological Society, 2013)

The ferns (Filicales) treated comparatively with a view to their natural classification - Bower, F. O. (Frederick Orpen), 1855 -1948 (University Press, 1923)

The Gardens' bulletin, Singapore (Govt. Print. Off. [etc.], 1959)

The Gardens' bulletin, Singapore (Govt. Print. Off. [etc.], 1959)

The Gardens' bulletin, Singapore (Govt. Print. Off. [etc.], 1959)

The Gardens' bulletin, Singapore (Govt. Print. Off. [etc.], 1958)

The Gardens' bulletin, Singapore (Govt. Print. Off. [etc.], 2017)

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, 1934)

Journal of the Arnold Arboretum - Arnold Arboretum. (Arnold Arboretum, Harvard University [etc.], 1946)

Journal of the Arnold Arboretum - Arnold Arboretum. (Arnold Arboretum, Harvard University [etc.], 1946)

Journal of the Arnold Arboretum - Arnold Arboretum. (Arnold Arboretum, Harvard University [etc.], 1946)

Pteridologist - British Pteridological Society. (The Society, 1984)