Part 3, 1912] AECIDIACBAK 



265 



Il.Uredinia hypophyllous, scattered, roundish. 0.5 mm. across, early naked, pulveru- 



1^00'''"''^°'''""^'*'''^''' '^''P^^''^^ epidermis evident; urediniospores " globoid, 18-25 by 

 .23-28m; wall golden-brown, thin, 1-1.5m, evenly echinulate, the pores 4, equatorial. 



III. Telia hypophyllous, thickly scattered, roundish. 0.5 mm. across, early naked, 

 pulverulent, light chestnut-brown, ruptured epidermis noticeable; teliospores broadly ellip- 

 soid or globoid, 18-23 by 20-30^, rounded or somewhat obtuse at both ends ; wall chestnut- 

 brown, rather thin. 1.5 m, slightly thicker above owing to the presence of a small semi-hya- 

 Ime papilla, finely and closely verrucose ; pedicel colorless, fragile, short. 

 'On Asclepiadaceae : 



Asclepias ampie:^icauHs S. E). Smith {A. obtusifolia Michx.), West Virginia. 



Ascleptas arenaria Torr., Nebraska. 



Asclepias Curassavica L,., Porto Rico. 



Asclepias decumbens L. {A, iuberosa decumbens Pursh), Florida. 



Ascleptas incarnata I,., Indiana, Iowa, Missouri, Pennsylvania, West Virginia, Wisconsin ; 

 Ontario. » » > 



Asclepias latifoha (Torr.) Raf., Texas. 

 Asclepias phytolaccoides Pursh, IlUnois, South Dakota. 

 Ascleptas pule hr a Ehrh. {A . incarnata pulchra Pers.), Delaware, Illinois. 

 Ascleptas quadrifolia Jacq., Ohio. 

 Asclepias Rolfsii Britton, Florida. 

 Asclepias speciosa Torr., Kansas. 



Asclepias syriaca L. (A. -Cornuii Decaisne), Delaware, District of Columbia, Illinois, 

 Indiana, Iowa, Kansas, Kentucky, Massachusetts, Michigan, Missouri, Nebraska, New 

 Jersey, New York, Ohio, Pennsylvania, Virginia, West Virginia; Ontario. 

 Asclepias Iuberosa I^., Iowa, Kansas. 

 Asclepiodora decumbens (Nutt.) A. Gray, Texas. 

 Asclepiodora viridis (Walt.) A. Gray, Kansas. 



Ibatia muricata (I,.) Decaisne {Gonolobus marilimus R. Br.), St. Croix. 

 Vincetoxicum gonocarpos Walt. {Gonolobus macrophyllus Michx.), West Virginia. 

 Type locality : North Greenbush, New York, on Asclepias Cornuli. 



Distribution : Northern United States and southern Canada east of the Rocky Mountains, 

 and locally in Florida, Texas, and the West Indies. 



EXSICCATI : Kllis, N. Am. Fungi 235 ; EHis & Ev. Fungi Columb. 648, 1696, 1896, 2185, 2186 ; 

 Earth. Fungi Columb. S294, 3295 ; Earth. N. Am. Ured. 92, 192,388; D. GrifF. W. Am. Fungi JP2; 

 Kellerm. Ohio Fungi 100; Rab.-Wint.-Paz. Fungi Eur. 3927, 4037 ; Seym. & Earle, Econ. Fungi 

 328, 329, 330; Sydow, Ured. 255, 1403; Thiim. Myc. Univ. 2235. 



11. Nigredo Solani (Dietel & Holway) Arthur. 



Uromyces Solani Dietel & Holway ; Holway, Bot. Gaz. 24 : 24. 1897. 



O and I. Pycnia and aecia unknown. 



II. Uredinia hypophyllous, scattered, roundish, 0.3-0.5 mm. across, tardily naked, 

 pulverulent, pulvinate, golden -brown, ruptured epidermis noticeable; urediniospores 

 obovate or ellipsoid, 18-21 by 24-32 m; wall golden-yellow, thin, 1-1.5 ju, rather sparsely 

 and strongly echinulate, the pores 2, opposite, equatorial. 



III. Telia hypophyllous, few, scattered, roundish, 0.3-0.5 mm. across, tardily naked, 

 compact, pulvinate, chestnut-brown, ruptured epidermis noticeable ; teliospores ellipsoid 

 or obovate-ellipsoid, 10-16 by 29-42 /z, rounded or narrowed at apex, usually narrowed 

 below; wall light cinnamon-brown, thin, 1 ^i, thickened at apex, 6-10 m, smooth; pedicel 

 tinted, about once the length of spore. 



On Solanaceae : 



Solanum appendiculaium H. & B., Mexico (state), Morelos. 

 Type locality: Cuernavaca, Mexico, on Solanum appendiculaium . 

 Distribution : South central plateau of Mexico. 



78. Nigredo (?) Ruelliae (Holway) Arthur. 



Uromyces Ruelliae Holway, Ann. Myc. 2 : 394. 1904. 

 Uredo Beloperonis Arth. Bull. Torrey Club 37 : 576. 1910. 



O and I. Pycnia and aecia unknown. 



II. Uredinia chiefly hypophyllous, numerous, scattered, sometimes crowded, roundish 

 or oblong, 0.1-0.3 mm. across, tardily naked, pulverulent, chestnut-brown, ruptured 

 epidermis conspicuous ; urediniospores obovate or ellipsoid, 15-23 by 21-29 jLt ; wall golden- 

 yellow, 1.5-2.5 M thick, rather sparsely and strongly echinulate, the pores indistinct, 2, 

 equatorial. 



