104 



Xcctrid liioiiKKr ll.-ils.' Ii;is Iiecii olisrrvcd in tlie vicinity of Rlooniini?- 

 toii, ii'.d., liy I'l-dr. .7. M. \';in Ilimk. (if Indiana rnivcrsity. It is suii- 

 ]ios('(l to canse a stem ami rodt ri;t <>{ swcrt potatoes in tlio field, a root 

 rot in storage, and a stem rot of e.irL'-plant in llie field. 



PcnioiUium spj). Tlie prevalence of tliese fungi renders tlieir attiicks 

 frequent. Tliey are usually superficial, but may, however, penetrate more 

 deepl.y, especially under conditions of considerable moisture. A wound of 

 some stu't is usually a further necessity ftir such an infection. 



Dhiltorihc huiaiali.s Harter and Field. This is the organism originally 

 desci'ibed as I'li'iiiiu lUiUita Kll. and Ilals.- Ilarter and Field have recent- 

 ly secured the ascigerous stage and have named the organism.^ It was iso- 

 lated seA'eral times from sweet potatoes raised in Tippecanoe County. The 

 culture was determined by Mr. L. L. Ilarter. of the Bureau of Plant In- 

 dustry. This appears to be the first time the species has been reportetl 

 in Indiana. It is not listed in the report of the Biological Survey of the 

 Academy in the Proceedings for 1S93, nor, so far as I have been able to 

 find, in the additions since. 



i^pJiwronciiia- finihriatiDn (Ell. and Hals.) Sacc, This organism causes 

 the disease known as "black shank." It was not found during the course 

 of tills work, hut was reported in the 1007 Yearbook of the Department of 

 Agriciiltui'e as iiaving l>een present in this state during that year. 



Fusariinii spp. During the course of the work several species of 

 I'lixiiriiiin were isolated and studied. Some species are common members 

 of the flora of decaying sweet iiotatoes. and the results indicate that one 

 or more of tlicm is partially responsible for the decayed condition. How- 

 ever, as the jioint has not been fully demonstrated, it seems best not to dis- 

 cuss it more fully here. 



' ITalstod. I',. D. Till' Iv^u-iilant St. 'in Kut. N. .T. Exp. Sla. Krpt- !-■ PP- -"^l- 

 283. 1891. 



■-' Ilalstcd, I!. Ii. Simic Kimunus 1 )is(>:\s(>s; of tlio S^wrot I'olal.i. X. .T. lOxp. 

 Sla. IJnll. 7G, pp. I.'.'!-!'."). 1800. 



" Ilartci-, L. 1... and I'icld. l^dicl ('. Diapurtho, Iho Asco-ciioiis l''orm of Swcot 

 Potalo Dry Rot. I'liytoiiatliolosy, Vol. II, No. .3, pp. 121-124. .Juno. 1012. 



•■Halstod, R. !>.. and Fairchild, D. (!. Sweot Potato lilack Kot. .Tour. Myc. 7, 



pp. 1-11, pis. 1-3. isni. 



I-Ialstod, B. D. Somo Kiinsous Diseases of tiiu Sweet Potato. .\. .1 Kxp. Sta. 

 Itidl. TC, i)p. 8-14. 1890. 



