Arthur : Uredinales of Porto Rico 79 



A very striking species in all its characters. The remarkable 

 paraphyses and the unusual appearance of the teliospores quickly 

 arrest attention. No trace of pycnia could be detected. 



59. PUCCINIA INFLATA Arth. 



On Malpighiaceae : 



Stigmaphyllon lingulatum (Poir.) Small, Boqueron, March 

 11, O, II, III, 327; Guanica, March 30, II, iii, 328; 

 Yauco, March 31, II, III, 3 29 ; Fajardo hills, April 20, 

 II, III, 331; Coamo, April 24, II, III, 330; Santurce, 

 April 24, II, III, 332. 



60. Puccinia Arechavelatae Speg. 



On Sapindaceae: 



Cardiospermum microcarpum H. B. K., Mayagiiez, two 

 kilometers east on Maricao road, March 7, 230, along 

 river, March 19, 228 ; Fajardo, April 18, 229. 

 In the former Porto Rican list (Mycol. 7: 236) the specific 

 name of the host was erroneously printed " microspermum." 

 The rust is a short cycle form. 



61. Puccinia Gouaniae Holw. 



On Frangulaceae (Rhamnaceae) : 



Gouania lupuloides (L.) Urban, Mayagiiez, Feb. 29, March 



1, 6, 8, II,, II.,, iii, 303. 2 

 Gouania polygama (Jacq.) Urban, Mayagiiez, March 10, 

 361, March 19, ll lf II 2 , 362; Ahasco, March 28, II,, 

 360; San German, April 1, II,, II 2 , 359. 

 The Whetzel-Olive collections give the first opportunity to 

 complete the life-cycle of this rust. All the collections on both 

 hosts gave an abundance of primary uredinia, accompanied by 

 pycnia. This stage is readily recognized, as the sori are seated 

 on waxy, gall-like, hypophyllous thickenings or pockets of the 

 leaf, one to four millimeters across. The pycnia are amphi- 

 genous, globoid or flask-shaped, sunken below the epidermis. 

 The uredinia are oval to oblong, surrounding the pycnia, on the 

 under side of the leaf, subepidermal, and without paraphyses. 



2 The primary uredinia, which function as aecia, and the secondary ure- 

 dinia, which function as repeating spores, are indicated by subscripts. 



