Parasitic Fungi of New Jersey 193 



thickened at apex, 25-38 x 13-16 /a." McAlpine, "The Rusts of Aus- 

 tralia," p. 132 (1906). 



1018. Part of infected leaf of wheat. 1019. Same showing sori, 2/3. 1020. 

 Uredospore, 1/12. 1021. Teleutospores, 1/12. 



PucciNiA XANTHii Schw. — Oil Xafithium sp. Described by Bur- 

 rill as follows : 



"III. Hypophyllous. Sori small, mostly closely clustered in spots 

 or patches; spores smooth, oblong, evidently constricted, apex 

 slightly thickened, round, or beak-like, 15-21 by 36-51 ix; pedicel 

 slightly colored, usually shorter than spore." Parasitic Fungi of 

 Illinois I, 184. 



1022. Under side of infected leaf of Xanthium sp. 1023. Teleutospore, 

 1/12. 1024. Germinating teleutospores, 1/12. 



C^OMA NiTENS, Schw. — On the leaves of cultivated blackberry 

 and raspberry. Described by Burrill as follows : 



"Hypophyllous. Sori irregular, flat, usually thickly associated 

 and confluent, more or less covering tlie surface, bright orange -yel- 

 low; spores subglobose, elliptical or oblong, epispore thin, finely 

 tuberculate, 12-24 by 18-32 /x; spermagonia scattered, numerous, 

 yellow, mostly on upper side of the leaf." Parasitic Fungi of Illin- 

 ois, p. 220. 



1025. Infected leaf of dewberry. (R. canadensis). 1026. Cross-section of 

 same, 2/3. 1027. Spores, 1/12. 1028. Germinating spores, 1/12. 



NiGREDO CALADii (Scliw.) Arth. — On Ariscema triphyllum. 



"O. Pycnia from a perennial mycelium, chiefly hypophyllous, 

 sometimes occurring also on the floral parts, evenly and extensively 

 scattered over large areas, preceding or accompanying the aecia, 

 abundant, punctiform, noticeable, half immersed, honey-yellow, be- 

 coming brownish, globose, 100-160 ^ in diameter, 96-128 ,u high; 

 ostiolar filaments rather short, 35-50 fi." 



"I. Aecia from a perennial mycelium, chiefly hypophyllous, 

 rather evenly and extensively scattered, short becoming cuculate, 

 about 0.2-0.4 mm. in diameter, peridium colorless, the margin erect 

 or somewhat spreading and recurved, finely eroded or sparingly 

 lacerate, peridial cells oblong or slightly rhomboidal, about 23-32 fi 

 long, 15-19 fji thick, the inner wall moderately verrucose, 3-4 /x, the 

 outer wall inconspicuously striate, 6-8 fi; seciospores subglobose or 

 ellipsoid 15-20 by 17-24 fi; wall pale yellow, moderately thin, about 

 1.5 fx, evenly and finely veiTucose." 



