Arthur: Uredinales Collected in Trinidad 19 



III. Telia not seen ;. teliospores in the uredinia oblong, 25-30 by 

 40-45 ft, rounded above and below, slightly or not constricted at 

 septum ; wall dark chestnut-brown, uniformly thick, about 3 /x, 

 closely and noticeably verrucose ; pedicel colorless, slender, fragile, 

 once length of spore or shorter. 



On Oliganthes condensatus (Less.) Schr. Bip. (Carduaceae) , 

 Lady Chancellor Road, March 14, II, 3179; same, March 17, II, 

 3236; same, March 21, II, 3283 (type); Oliganthes Milleri( ?) , 

 . western end of Monos Island, April 4, II, iii, 3459. The hosts 

 belong to the tribe Vernonieae, and are part of a genus comprising 

 about eight species confined to tropical America. All the species 

 are trees or shrubs, Oliganthes condensatus producing the largest 

 individuals known among the composites. The rust is notable for 

 its abundance of deeply colored paraphyses. Such structures have 

 been recorded for only one other species on the tribe Vernonieae. 

 Only a few teliospores were found. The type for the species has 

 been chosen to show the most characteristic and best development 

 of the uredinia, although the presence of teliospores could not be 

 demonstrated. The few teliospores seen were on a collection 

 which also had but few uredinia. The specific name is selected to 

 give recognition to the devotion of the collector of this and other 

 material which is the basis of this report, by which he has added 

 greatly to the store of mycological knowledge. 



46. Puccinia solanita (Schw.) comb. nov. (Aecidium solanitum 



Schw. Jour. Acad. Sci. Phila. II, 2: 283. 1853; Puccinia 

 claviformis Lagerh. Tromso Mus. Aarsh. 17: 53. 1895) 

 On Solanum sp., 3295. The type collection for Aecidium 

 solanitum is amply represented in the Schweinitz herbarium at the 

 Philadelphia Academy of Science. An examination of this mate- 

 rial shows that it bears a short-cycle rust, identical in appearance 

 with Puccinia claviformis. The collection has also been examined 

 by Mr. Percy Wilson and Dr. J. K. Small of the New York Botan- 

 ical Garden, and they pronounce the host to be a species of 

 Solanum, possibly S\ Melongena L. 



47. Puccinia Spegazzinii DeToni in Sacc. Syll. 7 : 704. 1888 

 On Mikania micrantha H. B. K., 3527; Mikania sp., 2956, 3135, 



3228, 3312. 



