272 



Mycologia 



Co., Aug. 26, 1909. Nearly defunct. Mrs. Clemens collected 

 fine material here in May. 



7. Aecidium sp. 



On Thalictrum Fendleri Engelm. : 450, July 12, 1904, Red 

 Butte Canyon, 6,000 feet. On Thalictrum sparsiflorum Turcz. : 

 pjd, Aug. 25, 1906, Big Cottonwood Canyon, 8,650 feet. The 

 alternate form of this rust is possibly p/, the Puccinia on several 

 species of Agropyron and Elymus. On numerous occasions I 

 have observed the two growing within a few feet of each other. 

 Among other instances might be cited collection pj/ of Puccinia 

 on Agropyron caninum Beauv. 



ExsiccATi: Fungi Utah. yd. (Distributed under the name of 

 Aecidium Thalictri-flavi Wint.) 



8. Caeoma CONFLUENS (Pcrs.) Schrot. (Uredo confluens Fevs.) 

 Krypt. Fl. Schles. 3^ : 376. 1887. 



On Ribes vallicola Greene, {R. saxosum Coville ; R. oxya- 

 canthoides L.) : 682, June 29, 1905, Big Cottonwood Canyon, 

 8,500 feet. This is possibly connected with a Melampsora found 

 on Salix phyUcifolia as recorded under 11 of this list. (See 

 Jour. Myc. 12: 163. July, 1906.) 



ExsiccATi : Fungi Utah. 77. 



9. Gymnosporangium Nelsoni Arth. I, 

 Bull. Torrey Club 28 : 665. 1901. 



On leaves of Amelanchier alnifolia Nutt. : 20/1, Aug. 2, 1909, 

 Fish Creek Canyon, western Sevier Co. ; 2088a, Aug. 26, 1909, 

 Gogorza, Summit Co. On July 7, 1904, in City Creek Canyon, a 

 single leaf of Amelanchier bearing spermogonia, probably of this 

 species, was taken. 



10. Hyalopsora Polypodii (Pers.) Magn. {Uredo Polypodii 



Pers.) 



Berichte der deutchen Bot. Gesell. 19: 582. 1901. 



On Filix fragilis (L.) Underw. (Cystopteris fragilis Bernh.) : 

 4g8, Aug. 27, 1904, Big Cottonwood Canyon, 9,000 feet. Not 

 uncommon. 



ExsiccATi: Fungi Utah. 7^. 



