606 



COMPARATIVE MORPHOLOGY OF FUNGI 



the spore which collapses (Woronin, 1881). In Neovossia, from 30 to 50 

 or more sporidia are formed (Fig. 401, 4 and 5); they never fuse but 



Fig. 401. — Neovossia Moliniae. 1. Tuft of hyphae with filamentous conidia. 2. Fila- 

 mentous conidia germinating to falcate conidia. 3. Young smut spores. 4, 5. Germina- 

 tion of smut spores. (1, 2 X 270; 3 X 330; 4, 5 X 240; after Brefeld, 1895.) 



develop to very slender mycelia which, in case the germination occurs 

 in water, pour out their content into falcate conidia or, if the germination 



Fig. 402. — Tuburcinia Ranunculi. 1 to 3. Development of a spore ball with fertile and 

 sterile cells. 5 to 9. Germination of smut spores. Tuburcinia Violae. 10. Binucleate 

 sporidia. (1 to 3 X 860; 4 X 230; 5 to 9 X 450; 10 X 660; after Lutman, 1910; Kniep, 

 1921; and Rawitscher, 1922.) 



takes place in nutrient solution, develop branched mycelia which, according 

 to cultural conditions, form acicular or falcate conidia (Brefeld, 



