SPHACELOTHECA. 





period, and produce three-celled promycelia with elon-att -d ovoid 

 conidia, which sprout indefinitely. In nutritive -olution- two 

 or three promycelia may lie produced. 



Schizonella. 1 



The spores are produced in series on the reproductive hyphae. 

 At tirst t\vii-ehaml>ered by mean.- of a cro^s-septum, they later 

 separate into two loosely-joined cells mid t'<>nn twin-spore- : each 

 half x* j rn>iii'''t ( ' s like an rx//A/////-spore. 



Schizonella melanogramma < I >. C.) (U.S. America i. A 

 specie-> t'niind (iii leaves i !' various species of ' ' . The spores, 

 when mature, oeape ly short fissures in 

 the upper epidermis of the host: tln-\ 

 are black and coupled in pairs by a short 

 connection. They germinate in water 

 and produce a promvcelium of three or 

 four cells from which conidia are 

 off. In nutritive solution the prom 

 produce conidia, which fall off and sprout 



-t-like for a time. 



Tolyposporium. 



Tin- -puro-i'iions hy]ihac form tan-led 

 masses, and produce their spores tirmly 

 hound together in halls. The single 

 Sporea are lar^c, somewhat an-iilar or 

 -ph'-rieal, and each -crminatcs like a 

 -pmv of Ustilago. 



Tolysporium junci iSrhroet.i causes 

 the formation ,,f -all-like out-mu t h> on 

 the ovaries, tlo\ver->talks, and haulms of JlLUCUB bufoniuS and 



./. capitatus. In these the spores levelnjied and escape as 



-jiore-lialls. The spores, after a prol. .n-ed rest, 'jcrininate in 

 water and pi-oducc fuiir-"clli-d promyeelia, from which o\ oid m- 

 spindle-~h:ip,.d runidia are given "If. In nutritive solutions mam 

 of tin- c.-iu in each spore-ball germinate and produce promycelia, 



at lirsi four-celled, later further divided l.y ueu Septa; the 



coiiiili:i -pr.iui and -row on till lhe\ reach the air, \\heiv a.-iial 

 ia are foi-me. 1. 



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