Arthur: Uredinales of Costa Rica 



131 



areas, or sometimes scattered, round, 0.3-0.6 mm. in diameter, 

 early naked, pulvinate, light yellowish-brown, ruptured epidermis 

 inconspicuous; teliospores oblong or fusiform-oblong, 12-15 by 

 30-40 fi, rounded or acute at apex, more or less narrowed below, 

 somewhat constricted at septum ; wall pale golden-brown, very 

 thin, 1 /jl or less, not or a little thickened above, up to 3 ft, smooth ; 

 pedicel colorless, about as long as the spore. 



This short-cycle species differs from Puccinia Arenariae 

 (Schum.) Wint. especially in the pale and very thin-walled 

 spores. 



55. Puccinia Arechavelatae Speg. (on Sapindaceae) 



Cardiospermum grandiflorum Sw., Alajuela, Jan. 7, 191 6, 383. 

 A short-cycle rust, common throughout the American tropics. 



56. Puccinia Gouaniae Holw. (on Frangulaceae) 

 Gouania polygama (Jacq.) Urban (G. tomentosa Jacq.), San 

 Jose, Dec. 26, 1915, II, 293A ; Orotina, Dec. 31, 191 5, II, 333. 

 A species having pycnia, primary and secondary uredinia, and 

 telia. It occurs also in the West Indies, and in Panama. 



57. Puccinia heterospora Berk. & Curt, (on Malvaceae) 



Malvaviscus arboreus Cav., Cartago, Dec. 22, 191 5, 2/6; San 

 Jose, Jan. 10, 1916, 402. 

 A short-cycle rust, widely distributed in both North and South 

 America on many hosts. 



58. Puccinia Anodae Syd. (on Malvaceae) 



Anoda hastata Cav., Cartago, Dec. 14, 1915, ^57. 



The species is known from South America, but has not before 

 been reported from North America. It was, however, collected 

 by Prof. Holway in Mexico, on Anoda acerifolia Cav., intermixed 

 with his no. 3194 of P. heterospora. It is a short-cycle rust, 

 with cinnamon-brown sori and teliospores. 



59. Puccinia filopes Arthur & Holway sp. nov. (on Sterculiaceae) 



Buettneria carthaginensis Jacq., Orotina, Dec. 31, 1915, 337. 



Telia chiefly hypophyllous, crowded or confluent in circular 

 areas 2-5 mm. across on larger discolored spots, round, 0.1-0.3 



