Arthur: Uredinales of Costa Rica 117 



4. Coleosporium Eupatorii Arth. (on Carduaceae) 

 Eupatorium collinum DC, San Jose, Dec. 28, 191 5, II, 311. 

 Eupatorium Oerstedianum Benth., San Jose, Dec. 10, .1915, II, 



236, same, Jan. 3, 1916, II, 354; San Ramon, Jan. 12, 1916, 



II, 412. 



A somewhat common species of Central America and the West 

 Indies. The aecia are unknown. 



5. Coleosporium Verbesinae Diet. & Holw. (on Carduaceae) 

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

 415- 



The species was also collected on Verbesina nicaraguensis 

 Benth., at San Jose in 191 1, and again at San Francisco de 

 Guadelupe, Nov. 3, 1912, both by A. Tonduz, and both showing 

 abundance of uredinia. The latter collection was distributed in 

 Sydow, Fungi exotici exsiccati 115. Aecia are not known. 



Family: UREDINACEAE (Melampsoraceae) 



6. Chrysocelis Lupini Lagerh. & Diet, (on Fabaceae) 



Lupinus Clarkei Oerst., Volcan de Irazu near Cartago, Jan. 21, 

 1916, I, 454. 



In most South American collections of this rust there are 

 telia associated with the aecia. The aecial stage on the same host 

 was also collected by E. Bethel, in about the same locality at 

 10,000 feet elevation, March 15, 1913, and also without trace of 

 telia. This is the first report of the rust in North America. 



7. Cerotelium Fici (Cast.) Arth. (on Artocarpaceae) 

 Ficus sp., San Jose, Dec. 10, 191 5, II, 23^/2, 238. 



A cosmopolitan rust of warm regions, but only uredinia have 

 been found in America. 



8. Phakopsora Vitis (Thiim.) Syd. (on Vitaceae) 

 Vitis sp. 



This widely distributed rust, especially on cultivated grapes, 

 was collected in the uredinial stage on a cultivated grape at San 



