•Air, TWENTY-FIRST KEPOKT. 



Joliaii Olsen Sopp, Olav. Monographic d^r Pilzgruppn Penicillium . Mit 

 lu'sondertir Boriieksichtigung der in Norwegeii gcfundenen Arteii. 

 Videnskapselskapets Skrifter I. Mat.-Naturw. KI. 1912" : 1-208. 

 Ph. 1-23. Fig. 1. 1912. 



Thorn. Charles and Church, Margaret B. Aspergillus fumigatus, A. nidu- 

 lans, A. terreus n. sp. and their allies. Am. Joiirn. Bot. 5: 84-104. 

 Figs. 1-3. 1918. 



Harshberger, J. W. Keys for the determination of species of Aspergillus and 

 Penicillium. A text-book of mycology and plant pathology. Appendix 

 VII. 702-721. 1917. Adapted from Buchanan and from Thom. 



Elliott, John A. Taxonomic characters of the genera Alternaria and Mac- 

 rosporium. Am. Journ. of Bot. 4: 439-476. Pis. 19-20. 9 graphs. 1917. 



Stevens, F. L. Some meliolicolous parasites from Porto Rico. Botanical 

 Gazette 65: 227-249. Pis. 5-6. Figs. 1-5.- 1918. 



Contains keys to the Porto Rican species of Arthrobotryum and Helmin- 

 thosporium that occur on Meliola. 



Appel, O. und Wollenweber, H. W. Grundlagen einer Monographie der 

 Gattung Fusarium (Link). Arbeiten a. d. Kaiserl. Anst. f. Land-u. 

 ForstwirtschaftS: 1-207. Pis. 1-3. Figs. 1-10. 1910. 

 The most important work that has been issued on this difficult genus, 



Wellenweber, H. W. Studies on the Fusarium problem. Phytopathology 

 3:24-50. PI. 5. Fig. 1. 1913. 



Gives a division of the genus into sections and discusses some of the 

 more important parasitic species. 



Stevens, F. L. and Dalby, Nora E. New or noteworthy Porto Rican fungi* 

 Mycologia 11:4-9. Pis. 2-3. 1919. 

 Gives a generic key for the Tuberculariaceaj-ScolecosporieEe. 



Hotson, J. W. Notes on bulbiferous fungi with a key to described species. 

 Bot. Gazette 64: 265-284. Pis. 21-23. Figs. 1-6. 1917. 

 Papulospora, chiefly. 



Shaw, F. J. F. and Ajiekar, S. L. Ihe ger.us Rhizoctonia in India. Memoirs 

 •of the Dtpcilnfr.t of /pidihuic in Iidin. BolJnioal Series 7: 177-164. 

 Ph. 1-6. 1915. 



