230 MICEOSCOPIC FUNGI. 



C. Spores with a papillose epispore. 



TTstilago bromivora, Waldh. Produced in the inflo- 

 rescence; massof spores black-brown; spores round or elongated 

 and irregularly flattened COOe-Ol mm.) ; olive-brown ; epispore 

 very finely papillose.— On the inflorescence of Bromus molhs and 

 other species. 



Ustilago vinosa, Tnl. Oxtma Smut ; produced on the 

 swollen receptacles ; spores roundish, very small, and minutely 

 papillose, separately pellucid, in clusters, violaceous.— On the 

 receptacles of Oxyria reniformis. Uncommon. 



D. Spores with a spinulose epispore. 



Ustilago Salveii, B. and Br. CocKsrooT Smut ; produced 

 on the leaves, forming elongated parallel sori on the upper sur- 

 face ; spores obovate, rather large, rough with minute granules. 

 —On leaves o( Dactplis glomerata and other Grasses. Not common. 

 (Plate VI. figs. 117-119.) 



Ustilago Maydis, Corda. Maize Smut ; produced on the 

 stums, germens, &c. ; epidermis at length bursting ; spores 

 spherical, minute, brownish-black, surface covered with eohinn- 

 late warts.— On stems, &c., of Zea Maps. (Plate V. flg. 108.) 



Ustilago olivacea, Tul. Olive Smut; infesting the en- 

 larged receptacle ; epidermis soon bursting ; spores olive-green, 

 powdery, minute, mixed with filaments.— On Carex nparia. INot 

 common. (Plate VI. figs. 126, 127.) 



E. Spores with a reticulated epispore. 

 Ustilago antheranim, Pr. Antheb, Smut ; produced 



on the anthers and permens; spores subglobose, effuse, violet.— 

 On the anthers of Silene inflata, &c. (Plate V. figs. 102-104.) 



Ustilago intermedia, Schrcet. Produced on thf florets ; 

 mass of spores violet ; spores globose or elliptic (•Qll-'OW mm.) ; 

 epispore c'-ar, violet, with narrow areolse.— On the florets ot 

 Scabiosa coLwrnhwria. 



Ustilago utrictilosa, Tul. Utbiclb Smut; produced in 

 the eermen and perigonium; epidermis soon ruptured ; spores 

 effusi, minute, globose, purple-black.--0n Po%o»«m S^f^mm 

 and other Pokgona. Autumn. Not uncommon. (Plate VJ.. 

 figs. 113-116.) 



UstUago reeeptaculorum, Er. Goatsbeasd Smut; 



