UREDINALES OF GUATEMALA 537 
217. PucciNiA Spegazzinii Dc Toni (on Carduaceae). 
Mikania cordifolia (L.f.) Willd. (?), Guatemala City, Feb. 15, 1916, 
4q6 same, Feb. 8, 1917, 843; Moran, Dept. Amatitlan, Dec. 22, 
1916, 622. 
A common short-cycle, leptoform rust of the tropics. 
218. PucciNiA SENECIONICOLA Arth. (on Carduaceae). 
Cacalia calotricha Blake, Volcan de Agua, Dept. Sacatepequez, 
March 7, 1916, II, 570. 
Cacalia sp., Guatemala City, Dec. 23, 1916, I, II, III, 632] same, 
Feb. 8, 1917, II, III, 84s ] Huehuetenango, Jan. 23, 1917, II, III, 
777; Zunil, Dept. Quezaltenango, Jan. 28, 1917, I, 794; Colomba, 
Dept. Quezaltenango, Feb. 3, 1917, I, II, III, 82/"] road be- 
tween Colomba and Quezaltenango, Feb. 4, 191 7, II, 5*J5, 836. 
Senecio sp., Guatemala City, Jan. 5, 1915, II, III, 10 \ San Rafael, 
Dept. Guatemala, Jan. 9, 1915, ii, III, 47; Quezaltenango, Jan. 
20, 1915, II, 93, 96A ; same, Jan. 16, 1917, II, 728] same, Jan. 28, 
1917, II, 781 ] San Felipe, Dept. Retalhuleu, Jan. 13, 1917, 
II, 702; Zunil, Dept. Quezaltenango, Jan. 28, 1917, II, 784. 
A species heretofore imperfectly known, and recorded only from 
Mexico. Three of Professor Holway's collections show aecia, with 
globoid or broadly ellipsoid spores, 23-30 by 26-35 1^^ the wall colorless, 
2-3.5 M thick, coarsely and thickly verrucose. The rust was also 
collected by Kellerman, on Senecio petasioides Greenm., Volcan de 
Cerro Quemado, Dept. Quezaltenango, Feb. 8, 1906, II, III, S418, 
and at Volcan de Atitlan, Dept. Solola, Feb. 16, 1906, II, III, 5442, 
and also on S. Warszewiczii A. Br. & Bouche, Volcan de Cerro Que- 
mado, Feb. 8, 1906, II, 5445, all being reported by Kern in Myco- 
logia I.e. 
FORM-GENERA 
219. Uredo pallida Diet. & Holw. (on Poaceae). 
Tripsacum latifolium Hitchc. 
This pale, small-spore rust was collected by Kellerman at Agua 
Caliente, Dept. Guatemala, Jan. 25, 1908, 7802. It was also found 
on phanerogamic specimens of the same host from Nicaragua and 
Salvador, communicated by Mrs. Agnes Chase, from the National 
Herbarium. 
Heretofore the rust has been known only on T. lanceolatum Rupr. 
(erroneously published as T. dactyloides) from Mexico, and on Zea 
Mays L. from Porto Rico. 
