110 



MORPHOI-OOY AND I'AIiASITISM OI' KHI/.OrTOXIA. 



Tlu- liyj)hiu of till- fungus (o wliicli tlu-se' sck'iutia holong rc- 

 seniltloil strongly those of the /»'. Suluiii attacking jute, eottoii, (S:c-. 

 The I'ells were f ion 1 (i-lU,, in diameter and from 1U0-"J00,, long, 

 the liranehes all showed the i)asal eonstiietion and disposition 

 of the transverse wall wliieli is eharaeteristic of liliizuclonia (Text 

 Fig. l\'. 1) : conjugation between tells of ditTercnt liyphaj sometimes 

 takes plaee (Text Fig. IV, 3). There was some variation in the size 

 of the eells, but not so nmch as in the ease of the Rhizoclonia of jute. 

 The very fine hypha" whieh oecur in eultures of the latter are not pre- 

 sent here ; in old cultures the hyphte turn a reddish brown eolour. 

 Mature hyphse often present the eurious a])pearancc shown in (Text 

 Fig. V), the cells being of triangular shape ; this is usually an early 

 stage in the formation of a sclerotium (ef. Rolfs PI. V, Fig. 2. Bull. 

 91). Young sclerotia are visible to the naked eye as HufTy aggrega- 



