UREDINALES OF GUATEMALA 465 
Although often taken in the uredinial stage, when it has generally 
passed under the name of Uredo paspalicola P. Henn. {U. Stevensiana 
Arth.), yet the telia are not uncommon. Observations by Whetzel 
and Olive in Porto Rico and by Bethel in Panama, made it highly 
probable that the alternate form is Aecidium tuhulostim on Solanum 
torvum. Cultures confirming this suggestion were made by Thomas in 
Porto Rico (Phytopathology 8: 163, 1918). 
The species was also collected by Kellerman on Paspalum Hum- 
holdtianum, El Rancho, Dept. Baja Vera Paz, Jan. i, 1908, II, 8034, 
and on Axonopus compressus (Swartz) Beauv., at Los Amates, Dept. 
Izabal, Feb. 22, 1908, II, 7540. 
109, Puccinia macra Arthur & Holway sp. nov. (on Poaceae). 
Paspalum candidum (Humb. & Bonpl.) Kunth, Solola, 7000 feet 
alt., Jan. 31, 1915, II, III, 168. 
Uredinia chiefly hypophyllous, scattered or in small linear groups, 
round or elliptic, small, 0.5-1 mm. long, early naked, orange or yellow- 
ish, pulverulent; urediniospores ellipsoid, 23-29 by 28-35 A^l wall 
thin, 1-1.5 M> pale yellow, finely and moderately or sparsely echinulate, 
the pores about 8, scattered. 
Telia hypophyllous, scattered or sometimes crowded and con- 
fluent, elliptic or oblong, 0.5-1.5 mm. long, early naked, dark chestnut- 
brown, ruptured epidermis evident; teliospores ellipsoid or obovoid- 
ellipsoid, 23-28 by 35-48 ^i, rounded at both ends or slightly narrowed 
below, slightly constricted at septum; wall chestnut-brown, 1.5-2 jx 
thick, slightly thicker at apex, 5-7 ix, smooth; pedicel tinted or nearly 
colorless, as long as the spore. 
no. Puccinia eslavensis Diet. & Holw. (on Poaceae). 
Valota insularis (L.) Chase (Panicum insulare Mey.), Laguna, 
Lake Amatitlan, Dept. Amatitlan, Feb. 8, 1915, II, 205* 
Agua Caliente, Dept. Guatemala, Feb. 10, 1917, II, 8^7. 
A rust ranging from the southern border of the United States tO' 
Guatemala, the aecia for which are not known. It was collected by 
Kellerman on the same host in the same locality, Jan. 31, 1906, II, III, 
54<5p, and reported by Kern in Journ. Mycol. /. c. 
III. Puccinia Cynodontis DeLac (on Poaceae). 
Capriola dactylon (L.) Kuntze {Cynodon dactylon Pers.), Guatemala 
City, March 17, 1916, II, III, 5^2; same, Feb. 14, 1917, II, 86s\ 
Quirigua, Dept. Zacapa, March 22, 1916, II, 5pp. 
A common rust wherever the host grows, but the aecia, which 
occur on Plantago, have not been found in America. 
