84 GEOLOGICAL AND NATURAL HISTORY 



Gen. Arcyria. Hill. 



499. A. nutans. Fr. Nodding Arcyria. Rotten wood. June. 



Order XI. Nidulariacei. Till. 

 Gen. Polyang'mm. Link. 



500. P. vitellinum Ditm. Egg-yellow Polyangium. Stumps. 



Family III. Coniomycetes. 

 Order XII. Sphaeronemei. 



Gen Phoma. Fr. 



501. P. ampelinum. B. & C. Dead grape vines. Woods. July. 



502. P. exiguum. Desm. Little Phoma. Elder shoots. Aug. 



503. P. glandicola. Lev. Acorn Phoma. Acorns. Sept. 



Gen. Discella. B. & Br. 



504. D. carbonacea. B. & Br. Black Discella. Dead twigs. 



Order XV. Puccinisei. 

 Gen. Phragmidium. Link. 



505. P. mucronatum. Link. Rose Brand. Living Rose leaves. Aut. 



506. P. gracile. Greve. Raspberry Bi and. Rasp, leaves. Aut. 



507. P. obtusum. Link. Strawberry Brand. 



508. P. graminis. Pers. Corn mildew. Leaves of corn. Aut. 



509. P. striola. Link. Sedge Mildew. Rushes. Autumn. 



510. P. corouata. Gorda. Coronated Mildew. Grasses. 



511. P. vaginalium. Link. Knot-grass Brand Aut. 



512. P. primulae: Grev. Primrose Brand. Primroses. June. 



513. P. variabilis. Grev. Variable Brand. Taraxacum. July. 



Gen. Gymnosporangium. D. G. 



514. G. juniperi. Lk. Living branches. 



Order XVI. Cseomacei. 

 Gen. Tilletia. Tul. 



515. T. caries. Tul. Bunt. On wheat Ailing the grains. Aut. 



