Index to American Mycological Literature 337 



Thaxter, R. Preliminary descriptions of new species of Rickia 

 and Trenomyces. Proc. Am. Acad. Arts & Sci. 48: 365-386. 

 S 1912. 



Includes eighteen new species of Rickia and four of Trenomyces. 



Thaxter, R. New or critical Laboulbeniales from Argentine. 

 Proc. Am. Acad. Arts & Sci. 48: 155-223. S 1912. 



Includes nine new genera and sixty-five new species. 



Webster, H. S. Grape culture in Pennsylvania. Dept. Agr. 

 Pennsylvania Bull. 217: 9-66. /. 1-32. 1912. 



Includes a chapter on fungus diseases of grapes. 



Whetzel, H. H. A destructive disease of peonies. Florists' Ex- 

 change 34: 565, 566. /. 1-4. 14 S 1912. 



Discusses the economic importance, symptoms, and control of the " American 

 Botrytis blight of the peony." 



Wolf, F. A. The perfect stage of Actinonema rosae. Bot. Gaz. 

 54: 218-234. pi. jj. 21 S 1912. 



Includes Diplocarpon gen. nov. 



Wolf, F. A., & Lloyd, F. E. Oedema on manihot. Phytopathol- 

 ogy 2: 131-134. pL ii-\-f. I. Au 1912. 

 - Zahlbruckner, A. Neue Flechten — VI. Ann. Myc. 10: 359- 

 384. 10 Au 1912. 



Includes Dermatocarpon heppioides, Mycoporelhim calif ornicum, Opegrapha 

 Hassei, Lecidea Hassei, Caloplaca Felipponei, and Sticta Pochi spp. nov. from 

 America. 



