528 
J. C. ARTHUR 
solid, or nearly solid, pedicels of the teliospores, caused by the greatly 
thickened walls, as well as by minor characters. 
The same rust on the same host was collected by Kellerman at 
Volcan de Atitlan, Dept. Solola, Feb, i6, 1906, ii, III, 5314, and was 
reported by Kern in Mycologia I.e., under the name P. inanipes 
It was collected by Prof. Holway on the same host at Patzcuara, 
Mexico, Oct. 17, 1898, 3007, Oct. 19, 1898, 3232, and Oct. 10, 1899, 
3600. These three collections bear uredinia but no telia. These 
specimens were collected for the Aecidium roseum Diet. & Holw., 
which they bear in abundance, while the uredinia are less conspicuous. 
The aecia were also taken at the same locality and time on other species 
of Eupatorium, and are believed to be heteroecious (see no. 117). 
The characters for the uredinial sorus, given above, are drawn from 
the Mexican material, the other characters from the Guatemalan 
material. 
190. Puccinia basiporula Jacks. & Holw. sp. nov. (on Carduaceae). 
Eupatorium Mairetianum DC, Quezaltenango, Jan. 16, 1917, 
II, III, 7Jj; same, Jan. 31, 1917, II, III, 808', same, Feb. 4, 
1917, II, 837. 
Eupatorium Mairetianum adenopodum Robinson, Cerro Quemado, 
Dept. Quezaltenango, Jan. 21, 1915, ii. III, 98 (type). 
Uredinia hypophyllous, scattered, round, small, 0.2-0.3 mm. 
across, early naked, pulverulent, cinnamon-brown, ruptured epidermis 
noticeable; urediniospores globoid, sometimes flattened at hilum, 
21-24 )u in diameter; wall cinnamon-brown, thin, 1-1.5 closely and 
finely echinulate, pores 2, near the hilum, often indistinct. 
Telia chiefly hypophyllous, scattered, round, small, 0.3-0.5 mm. 
across, early naked, somewhat pulverulent, blackish-brown, ruptured 
epidermis inconspicuous; teliospores ellipsoid, 23-26 by 32-35 ^i, 
rounded at both ends, slightly constricted at septum; wall chestnut- 
brown, 1.5-2.5 /z, thickened at apex and over pore of lower cell to 5 m» 
closely and distinctly verrucose; pedicel colorless, firm, 7 thick, 
once and a half to twice length of spore, often attached obliquely, the 
wall thin. 
The species was collected by Kellerman, on E. rafaelense Coult., 
at Volcan de Cerro Quemado, Feb. 8, 1906, III, 5449, and reported by 
Kern in Journ. Myc. I.e., under the name of P. Conoclinii, and like- 
wise issued in Kellerm. Fungi Sel. Guat. 14. 
191. Puccinia tolimensis Mayor (on Carduaceae). 
Eupatorium pansamalense Robinson, Agua Amargas, Dept. 
Quezaltenango, Jan. 30, 1917, 802. 
