228 MICE08C0PIC FUNGI. 



irregular; spores obovate, at first hyaline, very shortly pedicellate, 

 even, then brown. — On leaves of Myosoks. 



Protomyces menyauthis, De Bary. Spores aggregated in 

 roundish or confluent patches, immersed in the substance of the 

 leaves, purplish on the surface ; spores subglobose, brownish. — 

 On leaves of Menyanthia and Comarum. 



SiNOHiiKiUM, De Bary. 



Cellules often numerous, aggregated, involved in a common 

 membrane, forming sori ; endochrome coloured, decidedly 

 granular; zoogonidia globose, rarely oval or oblong. 



Synchytrium Taraxaci, I). By. Cellules variable, seated 

 beneath the cuticles of living leaves; zoogonidia globose. — On 

 leaves of Dandelion. 



Synohytritun mereurialis, Pckl. Tubercles confluent 

 on the nerves of the leaves, hemispherical, greenish, depressed 

 above, umbilicate ; sori oblong, grey ; zoogonidia globose, uni- 

 nucleate, hyaline, echinulate. — On leaves of Mereurialis perennis. 



Synchytrium Anemones, Wor. Gregarious, rounded, or 

 confluent, and irregular, pnrplish, then blackish ; zoogonidia 

 subglobose. — On leaves and petioles of Anemone nemorosa. 



USTILAGINEI, Ttjl. 

 UsTiLAGO, Link. 



Plant deeply seated. Spores simple, springing from delicate 

 threads, or in closely-packed cells, ultimately breaking up 

 into a powdery mass. — Berk. Outl., p. 335. 



A. Spores with epispore smooth. 



+ Spores globose, rounded oblong, or slightly flattened. 



/. Epispore brown. 



Ustilago grammica, B. aj"* Br. Banded Smut ; forming 



