I rj MOHI'HOI.OCY ANH PAItASll IS.M Ol' ItlllZOCTONI A. 



deep brown colour : death was slow in the ease of a mature plant o( 

 ground nut. Tlie infections were made in each case with hyphic 

 from an agar cidturc which had been originally infected with a scle- 

 rotium ; this sderotium was obtained from a culture made by in- 

 fecting an agar tube with a scraping of basidia. The comiectiou 

 l)etween basidia and sderotia is, therefore, estabhshed. 

 infection on the cow pea — 



It was found to be impossible to get the perfect stage into cul- 

 ture on artificial media. It is a])parently strictly parasitic. On 

 the living plant it forms a close network on the surface of stem and 

 leaves, and when tiie spores have been shed it wears off. In the field 

 the developiui'iit of basidia is particularly vigorous on those leaves 

 which are well shaded and in moist damp situations. 



Cultures on agar (media B, ('. D. K. K. (!). all prodiui'd abund- 

 ant white hvpha- ami sderotia. This hapixMicd Itotli in the case 

 of tubes infected with .sderotia and in those infected with ;i .scraping 

 from the fertile laver. Cultures uj)on filtei- paper, pitli moistened 

 with extract of ground nuts and corn meal also gave the same re- 

 sults. 



In addition to the evidence from inoculations other lacts all 

 goto prove that the perfect form of /{liizadntiia is a basidiomycete 

 such as we have described. 



