CHYTRIDIALES 



99 



19. Rhizophlyctis Fischer (1892: 119). 



The genus contains several species, all of which occur in algae 

 (Fig. 31). 



Fig. 31. — Rhizophlyctis mastigotrichis (Now.) Fischer, (a) Mature swarm- 

 sporangium with rhizoids attached to host threads. (6) Same with swarm- 

 spores, (c) Swarmspores. (After Nowakowski 1876.) 



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Fig. 32. — Nowakowskia hormotheceae Borzi in Hormotheca sicula. (a) Plant 

 sending rhizoids into several host cells. (6) Mature swarmsporangium. (c) 

 Swarmspores in naked mass after disintegration of sporangial wall, (d) Swarm- 

 spore mass broken into smaller colonies, (c) Germinating swarmspores. (After 

 Borzi 1885.) 



20. Nowakowskia Borzi {Bot. Centralbl, 22: 23, pi. 1, 1885). 



This genus, based on N. hormothecae Borzi (Fig. 32) on Hormo- 

 theca sicula in Sicily, is regarded as doubtful by Fischer (1892: 

 122). It is essentially the same as Rhizophlyctis except in the 



