1915] 



DUGGAR RHIZOCTONIA CROCORUM AND R. SOLAM 409 



of all the material I have been able to examine, and there is 

 included below a list of the material identified as Rhizoctonia 

 Crocorum (Pers.) DC. 



Exsiccati: Rhizoctonia Medicaginis DC, Linhart, Fung. 

 Hung. Fasc. 4: 400; Rhizoctonia Baud Rabenh., Rabenhorst, 

 Herb. Mycolog. Fasc. 1 : 74. (Helminthosporium rhizoctonum 

 Rabenh. ) ; Rhizoctonia Solani Kiihn, De Thuemon, Myc. Univ. 

 Cent. 18 : 1797. 



European collections: (1) Material from Prof. Delacroix, 

 Paris, 1901, as follows : on sugar beet ; on sugar beet, obtained 

 by inoculation from diseased beet; on potato; on potato, by 

 inoculation from affected beet ; on crocus ; on crocus, by inocu- 

 lation from affected beet; on alfalfa; on Onobrychis sativus; 

 on asparagus; and on asparagus, by inoculation from dis- 

 eased beet. (2) On crocus from bulb gardens, Pithiviers, 

 France, 1901. (3) From Prof. Aderhold, Proskau, Germany, 

 1899, on carrot and on root of young apple tree. (4) From 

 Prof. Sorauer, Berlin, 1900, on potato and on asparagus. 

 (5) From Herr Weigand, Helmitzheim, Bavaria, 1899, on 

 alfalfa. (6) From Prof. v. Tubeuf, Munich, 1899, on sugar 

 beet. (7) From Prof. Hartig, Munich, on roots of young coni- 

 fer. (8) From Prof. Cugini, Modena, Italy, 1899, on alfalfa. 

 (9) Material which the writer was able to obtain fresh near 

 Munich, 1905, on sugar beet and alfalfa. 



In 1901 the writer was unable to find in the Kew Herbarium 

 or in Paris any type material, and none was found in Mont- 

 pellier in 1905. 



American collections: (1) From Mr. P. W. Graff, Man- 

 hattan, Kansas, 1911, on alfalfa. (2) From Mr. F. D. Bailey, 

 Laurel, Oregon, (sent by Dr. G. L. Peltier, Univ. of 111.) 1915, 

 on potato. 



DISTRIBUTION 



In Europe the violet root felt fungus is in general widely 

 distributed, but its occurrence now and then in epidemic form 

 on some one host would appear to indicate some locality or 

 race influence. On Crocus sativus the fungus has been re- 



ported from France chiefly; on asparagus, more frequently 

 from France, Belgium, and Italy ; on Medicago sativa it would 



