Classification, 1 63 



On tlie roots of Toa annua. E-are. 



Protomyces pacliydermuSy Thum. 



Spots rather prominent, elliptical or subglobose, 

 brown, at first covered by tbe epidermis, then erum- 

 pent ; resting-spores subglobose or broadly elliptical, 

 14-24 fjb diameter^ epispore pale brown, smooth, 3-4 

 fju thick. 



Protomyces pachydermus, Thum. Hedw. 1874, p. 97 ; 

 Sacc. Syll. vii. n. 1121 ; Plow. Brit. Ured. and 

 Ustilag. p. 300. 



On living petioles and leaves of Daucus earota and 

 Taraxacum officinale. Not common. 



Resembling P. macrosporus in habit, but distin- 

 guished by the smaller spores. 



Protomyces meniantlds, De Bary. 



Forming scattered or confluent small, wart-like 

 patches, at first reddish, then brown ; resting- spores 

 solitary or several in the cells of the host, globose, 

 elliptical, or angular from mutual pressure, epispore 

 thick, brown, smooth, 20-40 /^ diameter. 



Protomyces menianthis, De Bary, Unters. liber d. 

 Brandpilze; Plow. Brit. Ured. and Ustilag. p. 301. 



Physoderma menianthis, Sacc. Syll. vii. n. 1119. 



On living leaves of Menianthes trifoliata and 

 Comarum palustre. Not uncommon. 



Protomyces ari, Cke. 



Resting-spores aggregated in large, irregular, 

 bleached patches on the petioles and leaves, not pro- 

 minent j spores usually numerous, broadly elliptical or 



M 2 



