150 



PROTESTS AND DISEASE 



42. VARIOUS SPORANGIA. 1, Sporangium, Didymium difforme x 20, part of the 

 outer membrane removed ; 2, Capillitium of the same X 280, the fibres have 

 nodes and are dichotomous ; the thickened margin of the base passes into the wall 

 of the sporangium ; 3, Didymium Clavus, sporangia X 20 : 4, Didymium nigripes 

 (xanthopus), sporangia, a, intact, b, broken open, showing the white columella ; 

 5, Didymium complanatum, plasmodiocarp, X 2 ; 6, section of the same X 80, 

 showing capillitium and large vesicles ; these are filled with yellow obscurely granular 

 matter, and are peculiar to this particular species ; 7, Cribraria languescens (United 

 States) sporangia after dispersion of spores x 20. After A. Lister. 



