ThccapJiorci. 295 



On Alisina plauiago. 

 July to October. 



Biology.— See p. 92. 



Doassansia sagittariae. (Fckl.) 



Spots yellowish, pustulate, rounded, "5-1 cm. across, hypophyl- 

 lous. Spore-balls roundish, 50-60/x in diameter. Teleutospores 

 firmly cohering, angular, pale brown-yellow, smooth, 8-1 i/a in 

 diameter. Promycelial spores numerous, cylindrical. 



Synonym. 

 Schrot., loc. cif., p. 286. 



Protomyces sagittarice, Fckl. Cooke, " Micro. Fungi," 4th 

 edit., p. 227. 



Exsiccaii. 

 On Sagittaria sagittifoUa. 

 May to September. 



Biology. — See p. 92. 



THECAPHOREI. Schrot. 



Spore-forming hyphae not gelatinized. Teleutospores com- 

 pound. PromyceUum sometimes branched. Promycelial spores 

 produced in concatenate chains from the end of the promycelium. 



Thecaphora. Fingerhuth. 

 Spore-balls composed of large teleutospores, firmly adherent, 

 convex externally. Promycelium filiform, sometimes with lateral 

 branches. 



Thecaphora hyalina. Fing. 



Spore-masses rich chestnut-brown, pulverulent, produced in the 

 seeds. Spore-balls irregularly rounded, very variable in size, 

 brownish yellow, 50-60 x 20-50/x. Teleutospores from two 

 to ten in number, firmly cohering, broadly and shortly cunei- 

 form internally, internal flat surfaces smooth, external rounded 

 surface rough with large rounded tubercles, brown, 15-20/i, in 

 diameter. 



