by William R. Maxon , Charles Alfred Weatherby , Lyman B. Smith , Robert C. Foster , Louis C. Wheeler
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Report upon a collection of ferns from T...
Notes on the validity of Asplenium ebeno...
A new cloak-fern from Mexico
A new Dryopteris from Dominica
New or critical ferns from Haiti
Pteridophyta of Porto Rico and the Virgi...
A revision of the Southern African speci...
The Argentine species of "Nothofaena"
A revision of the West Indian species of...
Correspondence