88 



Mycologia 



The germination of this rust was tested by Messrs. Whetzel 

 and Olive in moist air on a solid substratum and found to pro- 

 duce the usual indeterminate hyphal growth of genuine aecia. In 

 a number of instances they found the rust in the field so intimately 

 associated with a telial rust on Scleria pterota as to strongly 

 suggest their genetic connection. 



The rust has also been found in Jamaica by L. M. Underwood, 

 at Castleton, no. 82, Linstead, no. 1746, and Cockpit county, no. 

 3316. It also is known from South America, having been col- 

 lected in Peru by E. Ule, on Passiflora tricuspis, no. 3235. 



92. Aecidium Tournefortiae P. Henn. 

 On Boraginaceae : t 



Toumefortia bicolor Sw., Barceloneta, April 8, 64. 



Tonrnefortia micro phylla Bert., Yauco, March 30, 312. 

 The two hosts listed are new for the rust. The only previous 

 North American collections were by Prof. Stevens at two locali- 

 ties in Porto Rico on T. hirsutissima. 



93. Aecidium tubulosum Pat. & Gaill. 

 On Solanaceae: 



Solanum torvum Sw., Mayagiiez, March 6, 58; Maricao, 

 March 15, 56; Utuado, April 7, 57. 

 Field evidence suggests the possible connection of this form 

 with Puccinia substriata, no. 46. 



94. Aecidium abscedens Arth. 

 On Rubiaceae: 



Randia aculeata L., Barceloneta, April 5, 6, 61; Campo 

 Allegra, April 21, 62. 



95. Aecidium Borreriae Pat. 

 On Rubiaceae: 



Hemidiodia ocimifolia (Willd.) K. Schum., Mayagiiez, 

 March 6, 169a, El Yunque, April 14, 279. 



Form-genus : Uredo 



Paraphyses imbricated to form a pseudoperidium, or with cells united into a 

 peridial membrane, mostly forms belonging to Uredinaceae, Nos. 96 to 102. 



Paraphyses absent, or if present, free and peripheral, mostly forms belonging 

 to Aecidiaceae, Nos. 103 to 122. 



