CLINTON: NORTH AMERICAN USTILAGINEAE. 
409 
Myc. Uni., 928; Geminella melcinogramma (DC.) Magn., on Carex sp., 
Ell., N. A. Fungi, 291 ; Schizonella melanogramma (DC.) Schrot., on Carex 
Pennsylvanica , Seym. & Earle, Econ. Fungi, 56, Same, Clinton Ust. Supp., 
C 36, C 37, Ell. & Ev., Fungi Col., 474, on Carex sp., Griff., West Amer. 
Fungi, 225. 
Sori in the leaves, chiefly epiphyllous, linear, 1 to 2 mm. or often, 
by terminal fusion, of considerable length, forming rather per¬ 
manently agglutinated black striae; spores dark reddish brown, 
often with the cells becoming partially or entirely separated by the 
bulging of the contiguous sides, chiefly ellipsoidal to hemispherical 
or when separated into cells, polyhedral to subspherical, chiefly 
8-12 [x in length. 
Hosts : Carex atrata , Colo.; C. laxiflora, Ill.; C. Pennsylvanica, 
Conn., Ia., Ill., Mass., Mich., N. Y. (type U. pusilla) ; Carex sp., 
Calif., Colo., Ind., Mich., Ore., Utah, Wise., Wyo. 
A specimen of the type of TJstilago ambieiis received from 
Karsten proves to be this species. The germination has been 
described by both Schroter and Brefeld. Literature: 28, 152. 
Mykosyrinx Beck. 
Ann. Iv. K. Natur. Hofmus. Wien, 9 : 123. 1894. 
Type: Mykosyrinx Cissi (DC.) Beck. 
Host: Cissus sp. Dominica. 
Sori in the interior of the pedicles and peduncles of the inflores¬ 
cence, forming a double layered fertile stroma lining these and 
giving rise to a dusty spore mass which fills the hollowed organs; 
spores in pairs, formed from mother cells produced singly in the 
ends of short hyphae, with cells eventually becoming loosely con¬ 
nected by bulging of contiguous surfaces; germination not 
known (?). 
This genus has spores much like those of Schizonella; it differs 
in the character of the sorus and in the formation of the spores 
singly in the ends of the fertile hyphae. Only two species have 
been described both of which are found in warm or tropical regions. 
The hosts, apparently, are confined to the Vitaceae. 
Mykosyrinx Cissi (L>C.) Beck. 
XJredo cyssi DC., Poir. Encycl. Meth. Bot., 8: 228. 1808. 
