1.V2 .MOiU'iiuLucv .\.NJ> i'Ai;At;ni(SiV oi itiiizocioNiA. 



Platk V. 

 Vh. J. Trto luacroscltTotia of Muocto/ii'a x 10. 

 ,, -. Leaf uf ground mil attacked by lihizoiion'ui (iiiacioKrli'iotial foiui), tie 



young sderotia sliow as wliitc fluffy inat>«ei<. tlir mature Bclerotia arc 



more compact brown structures. 

 ;, 3. Leaf of gi'ound i>- t with two brown sderotia of yi'///:(*c(f»'(" and tljc wLitc- 



fertile layer of Corticium va/jum. 

 ,, -1. Stem of the cow pea Bliowing patches of the while KjjorogenoUB oubI of 



Corticium riK/Kiii. 



I'l.ATE VI. 



Fig. 1. Transverse section of outer portion of cortex of a diseased plant of cow 

 pea showing liyplia- of 1{. Solani in tissue, x 375. 

 2. Transveise section of outer coile.x of cow pea inoculated willi juti' h'liizoc- 

 toiiid, cork formation is taking place in the inner layers of the cortex, 

 ph. = pliellogea x :37.5. 



Plate VIL 



7^ Solani Kiilm. 

 FiL'. I, HvjiIki consi.stinL' "f sjiort barrel-shaped cells, an early stage in the 



formation of a sderotium x 500. 

 ,, 2. Later stage in the same x 1,000. 



■i. Further stage showing adhesion of lateral branches to main axis x 5(Ht. 

 ., 1. Young sclerotium of Khizoclonia of cotton. It is still jiossible to trace 

 the course of the original parent hypha x 375. 



I'LATK Vlll. 



It. Solani Kulin. 



Fi". 1. Sclerotia and liyplnc of the cotton Uhizocloiuu from an agar culture X 300. 



Fi".s. 2. 3. llyphic from a ciilluic made on liltci j)a])er in a solution of cane-sugar 



X 500. 



I'l.ATli IX. 



Fig. 1. Microphotograj)lj. Transveisc section of sdcrolia of It. Solani Kuhn 

 on the cow pea, the disintegrated tissue of the host can be seen sur- 

 rounding the sclerotia x 100. 

 2. .Micioplioto;;ia]ili. 'ria]i.-.\ rihr seel ion of sclerotia of Jt. Soldni Kulili 

 on the cotton ])lant x 375. 



