146 



Mycologia 



104. Puccinia ferox Diet. & Holw. (on Carduaceae) 



Verbesina myriocephala Sch. Bip., San Ramon, Jan. 13, 1916, III, 

 418. 



A short-cycle rust, heretofore only known from Mexico. 



105. Puccinia tageticola Diet. & Holw. (on Carduaceae) 



Tagetes filifolia Lag., San Jose, Dec. 10, 1915, III, 242. 

 Tagetes microglossa Benth., San Jose, Dec. 10, 191 5, II, 241. 



A long-cycle rust, found in Mexico, the West Indies, and in 

 South America, the initial stage being still unknown. 



106. Puccinia Absinthii DC. (on Carduaceae) 

 Artemisia vulgaris L., in a garden near San Jose, Dec. 28, 191 5, 



n, 308. ' 



A long-cycle rust, having pycnia, uredinia and telia, very com- 

 mon and widely distributed. It has not before been reported on 

 this host from North America. 



107. Puccinia cognata Syd. (on Carduaceae) 



Verbesina turbacensis H.B.K., San Ramon, Jan. 13, 1916, II, 422. 



As only uredinia are present, the reference to this species is 

 somewhat uncertain, especially as the host has not before been 

 recorded for it. 



108. Endophyllum circumscriptum (Schw.) W. & O. (on 



Vitaceae) 



Cissus sicyoides L. 



A short-cycle species, very common in tropical America on 

 various species of Cissus. It was collected at San Jose, on C. 

 sicyoides, in 191 1, by A. Tonduz, and a specimen communicated 

 by N. Patouillard. 



Form-species belonging to Aecidiaceae 

 109. Aecidium albicans Arthur & Holway, sp. nov. (on 

 Euphorbiaceae) 



Phyllanthus acuminatus Vahl, San Jose, Dec. 26, 1915, 294; Oro- 

 tina, Dec. 30, 191 5, 327 (type). 



