122 



Mycologia 



tion by Prof. Holway is quite ample, but no flowers or fruit 

 were obtained. There seems little question, nevertheless, that 

 the host is some species of Smilax. 



26. Uromyces Eragrostidis Tracy (on Poaceae) 



Eragrostis limb at a Fourn., Cartago, Dec. 14, 1915, II, iii, ^55; 

 San Ramon, Jan. 13, 1916, II, 421. 

 A rust of wide distribution in America, its aecia being un- 

 known. 



27. Uromyces Commelinae (Speg.) Cooke (on Commelinaceae) 



Commelina longicaulis Jacq. (C. nudiflora Auct. not L.), Heredia, 

 Dec. 17, 1915, II, 261. 

 A common long-cycle rust in warmer regions, which rarely 

 produces telia, and whose initial stage is unknown. 



28. Uromyces Celosiae Diet. & Holw. (on Amarantha.ee a e) 

 Iresine calea (Ibanez) Standley, San Jose, Dec. 10, 191 5, II, 

 237) Tres Rios near San Jose, Jan. 17, 1916, II, III, 437. 

 A long-cycle rust occurring also in Guatemala, Mexico, and 

 Cuba, whose first stage is unknown. 



29. Uromyces appendiculatus (Pers.) Fries (on Fabaceae) 

 Phaseolus truxillensis H.B.K., San Jose, Jan. 10, 1916, II, 397. 



This is a record of a new host for this cosmopolitan long-cycle 

 rust. The species was also collected on a cultivated species of 

 Phaseolus at Guadalupe near San Jose, Sept. 1908, II, and com- 

 municated by N. Patouillard, name of collector not given, but 

 probably A. Tonduz. 



30. Uromyces mexicanus Diet. & Holw. (on Fabaceae) 

 Meibomia uncinata (DC.) Kuntze (Desmodium uncinatum 



DC), San Jose, Jan. 18, 1916, II, III, 443. 

 Meibomia sp., San Jose, Jan. 17, 1916, II, III, 439. 



A long-cycle species, the initial stage unknown, heretofore only 

 reported from Mexico. 



