116 Umversitij of California Puhlimtions in Botany [Vol.7 



38. Phragmidium disciflorum (Tock-j James. 0, I, 11, III 



Funyi Mt'ikl., vol. 1, p. 16, 1790; James. Contr. U. S. Nat. Herb., vol. 3, 

 p. 276, 1895. 

 On cultivated roses of the hybrid perpetual class, common through- 

 out the state. 



39. Phragmidium imitans Arthur. I, II, III 



N. A. Flora, vol. 7, p. 165, 1912. 

 On Rnhiis leucodermis Dough, Sisson, Shasta Springs, Yosemite 

 Valley and Rionido; on cultivated varieties of raspberry rather 

 frequent and sometimes destructive. 



40. Phrag"midium Ivesiae Sydow. I, IT. Ill 



Auu. Mycologici, vol. 1, p. 329, 1903. 

 On PotentUla Blaschkeana Turez., Sisson, Lake Tahoe, Lassen 

 County (Davy) ; on P. glandulosa Lindl., Modoc County (Meinicke) ; 

 on P. Hallii Rydb., Lake Tahoe (Holway) ; on P. Elmeri Rydb., Don- 

 ner Lake (Heller). 



41. Phragmidium montivagum Arth. 0, I, II, III 

 Torreya, vol. 9, p. 24, 1909. 



On Rosa gymnocarpa Nutt., Pine Ridge, Fresno County (Hall and 



Chandler). 



42. Phragmidium occidentale Arthur. 0, I, II, III 



Greene, Plantae Bakerianae, vol. 2, p. 3, 1901. 

 On Ruhiis parviflorus Nutt., Shasta Springs, Los Gatos, Berkeley, 

 Mount Tamalpais, Rionido, Yosemite Valley, and Lake Tahoe. 



43. Phragmidium Rosae-californicae Diet. I, II, III 



Hedwigia, vol. 44, pp. 125, 333, 1904. 

 On Rosa californica Cham, and Schl., R. gymnocarpa Nutt., R. 

 sononiensis Greene, and R. minutifolia Englm. Of frequent occur- 

 rence throughout the Coast Ranges. The aecia produce hypertrophy 

 of the young shoots early in the season ; later they appear on the 

 mature leaves, which they injure but little. 



PILEOLARIA CAST. 

 Obs., vol. 1, p. 22, 1842. 

 Uredinia erumpent, with paraphyses; urediniospores borne singh'- 

 on pedicels, walls colored. Telia erumpent, definite ; teliospores borne 

 on pedicels, one-celled, flattened laterally, wall deeplj^ colored, very 

 verrucose. 



