230 MICROSCOPIC FUNGI. 



C. Spores with a papillose epispore. 



Ustilago bromivora, Waldh. Produced in the inflo* 

 rescence ; mass of spores bla-^k-brown ; spores rounder elongated 

 and irregularly flattened ("OOG-'Ol mm.) ; olive-brown ; epispore 

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

 other species. 



Ustilago vinosa, Tul. Oxyria SiruT ; produced pn the 

 swollen receptacles ; spores roundish, very small, and minutely 

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

 receptacles of Oxyria renifomm. Uncommon. 



D. Spores with a spinulose epispore. 



Ustilago Salveii, B and Br. Cocksfoot S:u:ut ; produced 

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

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

 — On leaves q{ Dactylis glomerata and other Grasses. Not common. 

 (Plate YI. figs. 117-119.) 



Ustilago Maydis, Corda. Maize S;mut ; produced on the 

 stems, germens, &c. ; epidermis at length burstina^ ; spores 

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

 late warts.— On stems, &c., of Zea Mays. (Plate Y. fig. 103.) 



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

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

 powdery, minute, mixed with filaments. — On Carex riparia. jSot 

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



E. Spores with a reticulated epispore. 



Ustilago antherarum, Fr. A^'THEIl Smut ; produced 

 on the anthers and i^ermeus; spores subglobose, effuse, violet. — 

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



Ustilago intermedia, Schroet. Produced on the florets; 

 mass of spores violet ; spores globose or elliptic (•011-0i37mm.) ; 

 epispore c^^ar, violet, with narrow areolae.— On the florets of 

 Scabiosa columbaria. 



Ustilago utricTilosa, Tul. Utricle Smut ; produced in 

 the germen and perigonium ; epidermis soon ruptured ; spores 

 effuse, minute, globose, purple- black.— On Po%o«z^?;? Eydropiper 

 and other Polygona. Autumn. Not uncommon. (Plate Vl. 

 figs. 112-116.) 



Ustilago receptaculorum, Pr. Goatsbeaud Smut; 



