Some Fern Reprints Recently Received 



K. C. BENEDICT. 



Maxon, W. R. A new genus of davallioid ferns. 

 Jour. Washington Acad. Sci., 3: 143, 144. 4 Mr. 1913. 



Maxon describes in this paper, Sphenomeris, as a new 

 genus with Odontosoria clavata (L.) J. Smith, as its type 

 species. The name Sphenomeris is applied to the species 

 formerly in Odontosoria, which have leaves with deter- 

 minate growth. The name Odontosoria is applied to 

 the species having climbing leaves of indeterminate 

 growth, like those of Lyg odium. 



Maxon, W. R. Studies of tropical American ferns, 

 No. 4. Contrib. IT. S. Nat. Herb. 17: 133-179. i-x. 

 fig. 1-7. pi. 1-10. June 1913. 



Under the title "Studies in tropical American ferns," 

 Maxon has already published three papers, comprising 

 two hundred and twelve pages and including about 

 fifty plates besides text figures. These, with the present 

 paper make up a considerable total in this series of 

 valuable data on American ferns which have been 

 developed in connection with the writer's wide studies 

 on the fern phylum. 



"The present paper, like the preceding ones of the 

 series, includes brief discussions of several genera or 

 smaller groups of species which have been the subject 

 of great confusion, but which it is now possible to treat 

 with some degree of assurance." The groups treated 

 in the present paper, with the sub-titles, are as follows: 

 Asplenium Trictiomanes and its American allies; the 

 North American tree ferns of the genus Dicksonia; the 

 genus Odontosoria; Notes on Bommeria and related 

 genera; New species of Lycopodium; A new Cyathea from 

 Santo Domingo. New species are described as follow: 

 Asplenium 4, Odontosoria 3, Lycopodium 5, Cyathea 1, 

 and Dicksonia 1. 



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