290 



Mycologia 



Nos. 4625 and 5363 were erroneously reported in the first 

 article (Jour. Myc. 13: 20) as Kuehneola albida. It was noted 

 there that the markings of the urediniospores of no. 5363 are 

 much coarser than is typical in that species. This coarse spi- 

 nosely-echinulate surface is characteristic of U. Rubi. The host 

 of no. 5363 was determined by John Donnell Smith, all the 

 others have been determined by P. A. Rydberg with an indication 

 of some uncertainty in nos. 4625 and 5319. 



Uromyces Gouaniae sp. nov. — Pycnia and aecia unknown. 



Uredinia hypophyllous, scattered, small, inconspicuous, punc- 

 tiform, roundish, chestnut-brown ; paraphyses encircling the sori, 

 clavate or cylindrical, 10—16 X 30-4 0 somewhat incurved, the 

 wall colorless, thin, about 1 urediniospores obovoicl or broadly 

 ellipsoid, 18-19 X 21—26 /x, the wall light cinnamon-brown, 1.5-2 ft 

 thick, evenly and sparsely echinulate ; pores 2, occasionally 3, 

 superequatorial. 



Telia resembling the uredinia, slightly darker ; teliospores 

 broadly ellipsoid or ovoid, 18-23 X 26-29 the wall chestnut- 

 brown, with a slightly paler umbo, moderately thick, 2-2.5 fx, 

 thicker above, 4-5 evenly and moderately verrucose ; pedicel 

 tinted, once to twice length of spore. 



On Gonania doming ensis L., Laguna, Depart. Amatitlan, alt. 

 1200 m., Jan. 25, 1906, no. 5391. 



There is no other species of Uromyces known on this or any 

 closely related host. The general characters of this species are 

 paralleled in a very interesting manner by Puccinia Gouaniae 

 Holw., the important difference between the two being the number 

 of cells in the teliospores. I] redo Gouaniae Ellis & Kelsey is 

 doubtless the uredinial stage of Puccinia Gouaniae Holw. The 

 host of the Guatemalan specimen has been determined by J. N. 

 Rose. 



Aecidium Loranthi Thiim. — On Loranthus sp., Guatemala, 

 Depart, unknown, Feb. 27, 1902, Wm. Trelease. 



Uredo malvicola Speg. — On Malvaviscus (host no. 5238), 

 Mazatenango, Depart. Suchitepequez, alt. 330 m., Feb. 28, 1905, 

 no. 5375- 



The host of this collection has been examined by J. N. Rose, 



who suggested this determination with some doubt owing to the 



very fragmentary condition of the specimen. 



Purdue University, 

 Lafayette, Indiana. 



