Part 1, 1906] TILLETIACBAE 



63 



smooth, with evident double walls, the outer usually irregularly thickened, 12-15 fi or even 

 17 fi in length ; conidia not observed. 



On Carduaceab : 



Cosmos sulphtireus, Mexico. 

 Type locality : Chapala, Mexico, on Cosmos sulphureus 

 Distribution : Known only from the type locality. 

 ExsiccATi : Sydow, Ust. 282 ; Seym. & Earle, Kcon. FunRi C 108. 



12. Entyloma arnicale Ellis & Kv. (N. Am. Fungi 3136; hyponym. 1894) 



Bull. Torrey Club 22 : 57. 1895. 



RamtilaHa arnicalis Ellis & Ev. Proc. Acad. Nat. Sci. Phila. 1891 : 85. 1891. 



Sori in leaves, forming reddish-brown subcircular or angular areas, prominent on upper 

 surface, 3-8 mm. in diameter, distinct or often killing intervening tissue and thus forming 

 an extended dead area ; spores yellowish to chestnut-brown, rather uniform, chiefly sub- 

 spherical or spherical, often with evidence of gelatinous envelope which in some cases 

 forms conspicuous papillae on the rather thick spore-wall, chiefly 13-17 /z in diameter; 

 'Conidia forming a slight hypophyllous growth "in center of area, chiefly linear-lanceolate, 

 often slightly curved at upper end, about 18-28^ X 3^. 



On Carduaceae : 



Arnica Cham-issonis^ Washington. 

 Arnica cordifolia, Idaho. 

 Arnica latifolia, Washington. 



Type locality: Mountains of Skamania County, Washington, on Arnica Chamissonis. 



Distribution : Idaho and Washington. 



KxsiCCATi : Ellis & Kv. N. Am. Fungi JiJd ; Ellis & i^v. Fungi Columb. 540. 



13. Entyloma guaraniticum Speg. Anal. Soc. Ci. Argent. 17: 127. 1884. 



Sori in leaves, subcircular, lightish or eventually dark-colored, usually separate, often 

 thickened and concavo-convex, 2-6 mm. in diameter; spores hyaline to light-yellow, more 

 .or less adhering in masses or uniserial rows, subspherical to oblong or more irregular, 

 provided with a prominent gelatinous envelope which is not always distinct from the cell- 

 wall, 11-20 }!■ in length. 



On Carduaceae : 



1 Bidens frondosa , Massachusetts. 



Bidens leucantha, Florida ; Porto Rico. 

 Type locality : Paraguay, on Bidens leucantha. 



Distribution : Massachusetts and Florida ; Porto Rico ; also in South America. 

 Exsiccati : Seym. & Earle, Econ. Fungi C 107. 



14. Entyloma Floerkeae Holway; (Ellis & Ev. N. Am. Fungi 2288 ; 

 hyponym. 1889) Davis, Trans. Wise. Acad. 11: 170. 1897. 



Sori in leaves, yellowish, often killing tissues, showing on both sides, oval to circular, 

 About 2-4 mm. in length; spores hyaline to reddish-yellow, ovoid to chiefly subspherical 

 or spherical, with moderately thin wall, often with remains of hypha showing as a short 

 .appendix, smooth, 9-13 fi in length ; conidia hypophyllous, not forming a very prominent 

 growth, slightly falcate, 12-16/^X1.5/*. 



On lylMNANTHACEAE : 



Floerkea proserpinacoides ^ Illinois, Ohio, Wisconsin. 

 Type locality: Racine, Wisconsin, on Floerkea proserpinacoides. 

 Distribution: Ohio, Illinois, and Wisconsin. 

 ExsiCCATi : Kllis & Ev. N. Am. Fungi 2288, 3237 ; Seym. & Earle, Econ. Fungi C 106. 



15. Entyloma Collinsiae Hark. Bull. Calif. Acad. Sci. 1: 40. 1884. 



Sori in leaves, whitish, showing on both surfaces, but somewhat darker-colored above, 

 subcircular, thin, 1-3 mm. in diameter; spores tinted reddish-yellow, ovoid to chiefly sub- 

 spherical or spherical, thick-walled, often with remnant of hypha showing as a short ped- 

 icel, 10-14 /i in length ; conidia not observed. 



On Scrophulariaceae : 



Collinsia bartsiaefolia , California. 

 Type locality: Mt. Tamalpais, California, on Collifisia bartsiaefolia. 

 Distribution : Known only from the type locality. 



