36 NORTH AMERICAN FLORA [Volumk 7 



agglutinated black spore-mass ; sterile cells more or less gelatinized, often almost in frag- 

 ments ; spores medium to dark reddish-brown, somewhat compressed laterally and so appear- 

 ing oblong to circular according to view, occasionally obtusely angled, at times with hyaline 

 fragments still attached, verruculose though sometimes rather obscurely, 13-16 ^, rarely 

 18 (Ji or even 20 ju, in length. 



On Cyperaceae : 



Rynchospora corniculaia^ Florida. 



Rynchospora corniculata macrostachya {R. macro s tacky a) ^ New York, 



Rynchospora gigantea , Porto Rico. 



Rynchospora Tracyi, Florida. 



Rynchospora sp., Mexico. 



? Rynchospora^ Cuba, San Domingo. 

 Type locality : San Domingo, "on the sheaths of some sedge " [probably Rynchospora sp.] . 

 Distribution : New York, Florida, Cuba, San Domingo, Porto Rico, Mexico ; also from South 

 America, Asia and Australia. 



Illustration : Bot. Jahrb. 17 : 490. 



ExsiCCATi : Sydow, TJst. 224 ; Seym. & Barle, Boon. Fungi C 104. 



5. SCHIZONELLA Schrot. Beitr. Biol. Pfl. 2 : 362. 1877. 



Sori in the leaves, forming black agglutinated spore-masses ; spores in pairs, produced 

 serially in the fertile threads, arising by internal division of a mother cell, usually becoming 

 somewhat laxly connected by the bulging of contiguous surfaces or sometimes separating 

 into individual cells, of medium size ; germination by means of a short promycelium, the 

 cells of which give rise to sporidia as with Ustilago. 



Type, Uredo melanogratnina DC. 



1. Schizonella melanogramma (DC.) Schrot. Beitr. Biol. 



Pfl. 2: 352. 1877. 



Uredo melanogramma DC. Fl. Fr. 6: 75. 1815. 



Ustilago ambiens Karst. Oefv. K. Sv. Vet.-Akad. Forh. 292 : 108. 1872. (Type from Spitzbergen.) 



Urocystis pusilla Cooke & Peck ; Peck, Rep. N. Y. State Mus. 25 : 90. 1873. (Type from New 



York, on Carex pennsylvanica.') 

 Gem-inella m.elanogram,m.a Magn. Hedwigia 14: 19. 1875. 

 Entyloma awdx^re^ Johans, Oefv. K. Sv. Vet.-Akad. Forh. 419; 160. 1885. 



Sori in the leaves, chiefly epiphyllous, linear, 1-2 mm., or often by terminal fusion 

 of considerable length, forming rather permanently 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 /^ in length. 



On Cyperaceae : 



Carex atrattfor^sdsAC . atraia), Colorado. 



Carex Hoodii , ^teh^ 



Carex laxiflora^ XXlinois. 



Carex pennsylvanica^ Colorado, Connecticut, Illinois, Iowa, Massachusetts, Michigan, 



New York, Wisconsin. j» • ■ ^■. 



Carex sp., California, Colorado, Indiana, Michigan, Nevada, Oregon, foahyWyoming. 

 Type locality; Jura, Europe, on Carex montana. 



Distribution : New England to Oregon and California ; also in South America and Europe. 

 Illustrations: Bull. Conn. Geol. Nat. Hist. Surv. 5: f. 9,35; Brefeld, Unters. Gesammt. 

 Myk. 12: pi. 9,f. 6-12; Beitr. Biol. Pfl. 2 : pi. 12, f. 6. 



ExsiCCATi : Thiim. Myc. Univ. 928 ; Ellis, N. Am. Fungi 291 ; Seym. & Earle, Econ. Fungi 

 56, C36, C37 ; Ellis & Ev. Fungi Columb. 474; Griff. West Am. Fungi 225. 



6. MYKOSYRINX G. Beck, Ann. Nat. Hofmus. Wien 9 : 123. 1894. 



Sori in the interior of the pedicels and peduncles of the inflorescence, 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 connected by bulging of contiguous 

 surfaces; germination not known (?), 



Type, Uredo Cissi DC. 



