1 62 British Funo;i, 



<b 



Somewliat resembling in habit tlie genus Synchy- 

 trium, but distinguislied by the presence of mycelium. 

 Gonidial forms of reproduction are unknown. 



Protomyces macrosporus, Unger (fig. 50, 51). 



Spores usually aggregated in scattered, oblong or 

 subglobose, gibbous spots, which are at first pale and 

 translucent, then brown; spores subglobose or ellip- 

 tical, 30-80 jjb diameter, epispore pale yellow, smooth, 

 3-5^ thick j sporidia cylindrical, colourless, 2-2.5 

 X 1 /x. 



Protomyces macrosporus, Unger, Exanth. der 

 Pflanze, p. 344, t. vi. f. 34 ; Sacc. S^dl. vii. n. 1120 ; 

 Plow. Brit. Ured. and Ustilag. p. 300. 



On living stems and petioles more especially of 

 Mgopodium podagraria , Daucus carota, Heracleum 

 splwndylium, Anthriscus sylvestris, Apium nodi/lorum, 

 Meum anthehninticum, Angelica sylvestrisj ^nantlie 

 crocata. Common. 



Dr. R. Caspary suspects that the present species is 

 nothing more than the oosporic condition of Perono- 

 sporaumbelliferarum {^=^Plasmopara nivea, Schroet.) ; 

 see Berlin Bericht iiber die zur Bekaunt, 1855. 



Protomyces rhizohius, Trail. 



Eesting-spores spherical, 30-33 fi diameter, 

 epispore subhyaline or pale brown, 10-12 fi thick; 

 in the cortex of the root, in groups of from 2 — 8, 

 mixed with delicate mycelium. 



Protomyces rhizohms, Trail. Scot. Nat. 1884, p. 

 125; Sacc. Syll. vii. n. 1138; Plow. Erit. Ured. and 

 Ustilag. p. 300. 



