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Mr. H. N. Dixon 1 continues his studies of Australian mosses which have 
already been noticed in the Bryologist, by the description of twelve new spe- 
cies, and critical notes upon two others. Several of the new species were sent 
to Mr. Dixon by Mr. W. Gray, who has for some years been a member of the 
Moss Society. All the new species are beautifully figured in the accompanying 
plate. 
The account of the genus Plagiochasma which Dr. Evans 2 contributes to 
the May issue of the Bulletin was presented in part at the last meeting of the 
Sullivant Moss Society at Philadelphia. It gives detailed descriptions, figures, 
synonymy, and ranges for the eight species recognized as occurring north of Cen- 
tral America, besides a wealth of critical notes upon each species, an account of 
the history and morphology of the genus as a whole, and a bibliography of 40 
titles. The ranges include many extra-limital stations. One new species, 
Plagiochasma Landii, is proposed, and one new combination, P. jamaicense 
(Haynes), made. 
It has been the good fortune of Mr. R. S. Williams 3 to study the interesting 
collection of 41 mosses made by Dr. and Mrs. J. N. Rose while collecting cacti 
in the nearly rainless regions of Peru, Bolivia, and Chile. The region has been 
but little studied bryologically, and the collection contains many new or inter- 
esting species. Ten new species and one new genus ( Pseudocrossidium ) are 
described and figured, and one new combination made. 
Lichenists will be interested in the latest issue of the Ohio Biological Survey 
Bulletin, 4 which treats of the Ascomycetes of the state. In the first article Prof. 
Bruce Fink deals with the preliminary considerations of classification, illustrat- 
ing the text by eight figures. This article outlines the reasons for treating the 
Ascomycetes, both lichenous and non-lichenous, as a single class of fungi, enumer- 
ates the orders and families with mention of the genera known to occur in Ohio, 
and lists a bibliography of 67 titles. The second article by Prof. Fink and Mr. 
C. Audrey Richards describes all species of Collemaceae occurring in the 
state, with keys to genera and species, besides ten pages of “General Considera- 
tions,” and a small additional bibliography. Two new species, Synechoblastus 
ohioensis Fink, and Leptogonium plectenphyllum Fink & Rich., are described. 
Four plates, containing 25 figures illustrate the article. . 
E. B. C. 
1 H. N. Dixon. New and Rare Australian Mosses, Mostly from Mitten’s Herbarium. Bull.. 
Torrey Club 42 : 93-110. pi. 9. (1915.) 
2 Alexander W. Evans. The Genus Plagiochasma and its North American Allies. Bull. 
Torrey Club 42 : 259-308. figs. 1-8. (1915.) 
3 R. S. Williams. Mosses from the West Coast of South America. Bull. Torrey Club 42 : 
393-404. pis. 21-25. (191S.) 
4 Ohio Biological Survey Bulletin 5. Pp. 1-72. pis. I-IV. Columbus, Ohio. (June 1915)- 
