Part 1, 1906] USTIIvAGINACEAB 17 



On Poaceae : 



Sporobolus ejuncidus {S . junceus') , Mississippi. 



Type locality : Columbus, Mississippi, on Sporobolus junceus (5. ejuncidus) . 

 Distribution : Known only from the type locality. 



45. Ustilago Vilfae Wint. Bull. Torrey Club 10 : 7. 1883. 



Tilletia subfusca Hume, Proc. Iowa Acad. Sci. 9 : 235. 1902. (Type from Iowa, on Sporobolus 

 neglectus. ) 



Sori in the inflorescence, converting it into an elongate dusty spore-mass 1-2 cm. in 



length, at first completely hidden by the enveloping leaf-sheath ; spores dark reddish-brown, 



ovoid or rarely oblong to spherical, often slightly angled, more or less prominently verru- 



culose, chiefly 12-16 /*, rarely 19 /i, in length. 



On Poaceae : 



Sporobolus neglectus^ Iowa, Nebraska. 



Sporobohis vaginaejlorus ^ Kansas, Nebraska, Pennsylvania. 



Type locality : Chester County, Pennsylvania, on VUfa vaginaefiora {Sporobolus vaginae- 

 Horus) . 



Distribution : Pennsylvania ; Iowa to Nebraska. 



:Exsiccati : Ellis, N. Am. Fungi 109S ; Ellis, Ev. & Barth. Fungi Columb. 2197. 



46. Ustilago Rabenhorstiana Kiilin, Hedwigia 15 : 4. 1876. 



Caeoma Syniherismae Schw. Trans. Am. Phil. Soc. II. 4: 290. 1832. (Type from North Carolina, 



on Syniherisma sp.) 

 Ustilago Cesaiii Fisch. de Waldh. Aperpu Syst. Ust. 25, p.p. 1877. 

 Ustilago Syntherismae Cooke, Grevillea 6 : 138. 1878. Not U. Syntheris-ynae Peck. 1875. 



Sori usually involving the entire inflorescence, linear -oblong, 3-5 cm. in length, at first 

 hidden by enveloping leaf-sheaths but finally more or less visible as' a black-brown dusty 

 mass of spores surrounding the elongate remnants of the inflorescence ; spores reddish 

 olive-brown, ovoid to spherical or occasionally somewhat angled, echinulate or verruculose, 

 usually 10-14 ," in length. 



On Poaceae : * 



Syniherisma filiforme {Panicum Jilifor^ne) , New Jersey ; Mexico (Guadalajara). 



Syntherisma fimbria lum {P. fimbria tutn), Mexico (Guadalajara). 



Syntherisma humifusum {P. glabrum) ^ Iowa., Illinois, Kansas, Minnesota, New Hampshire. 



Syntherisma sanguinale {P. sanguinale), Alabama, Connecticut, Delaware, District of 

 Columbia, Georgia, Illinois, Indiana, Iowa, Kansas, Maryland, Massachusetts, Minne- 

 sota, Mississippi, Missouri, Nebraska, New Jersey, New York, North Carolina, Ohio, 



Texas, Wisconsin. 

 Syntherisma {Panicum') sp., New York, South Carolina. 

 Type locality : Europe, on Panicum, sanguinale {Syntherisma sanguinale). 

 Distribution : New England to Georgia, Minnesota, and Mexico ; also in Europe and Australia. 

 Illustrations : Trans. Acad. Sci. St. Louis 7 : pi. 26, f. 4-5, pi. 27, f. 6-S ; Bull. Conn. Geol. 

 Nat. Hist. Surv. S:/.50; Bull. Iowa Agr. Exp. Sta. 54 : /. 114 {14) ; Ann. Rep. N. J. Agr. Exp. 



'Exsiccati: Ellis, N. Am. Fungi 2^7, 1890^; Seym. & Earle, Econ. Fungi 63, 63^, C 85, C 144, 

 C145 ; Rab.-Wint.-Paz. Fungi Eur. 4010 ; Sydow, Ust. 164; Rav. Fungi Am. 5(5. 



47. Ustilago Holwayana P. Henn. Bot. Gaz. 28 : 274. 1899. 



Sori in the inflorescence, elongate, 2 cm. or more in length, concealed by leaf-sheaths, at 

 first covered by a thin membrane which soon ruptures disclosing a black-brown dusty spore- 

 mass surrounding remains of inflorescence as a columella ; spores medium-dark reddish- 

 brown, ovoid to spherical or occasionally slightly angled, rather prominently echinulate, 



12-16 ji in length. 

 On Poaceae : 



Paspalum velutinum,'M.Q-K\co. . 



Type locality: Patzcuaro, Michoacan, Mexico, on Paspalum veluttnum. 



Distribution : Mexico. 



48. Ustilago Aegopogonis P. Henn. Hedwigia 37 : 267. 1898. 



Sori elongate-ellipsoidal, 5-10 mm. in length, enclosed in leaf-sheaths, possibly 

 aborting the inflorescence but the dusty black spore-mass without remains of plant tissues ; 

 spores dark reddish-brown, subopaque, broadly oblong or ovate to spherical or often slightly 

 angled, rather obscurely verruculo-echinulate, chiefly 11-14^ in length. 



On Poaceae : 



Aegopogon cenchroides, Mexico. 

 Hilaria cenchroides, Arizona. 



