UREDINALES OF GUATEMALA 
445 
pequez, March i, 1916, ii, III, 547; Guatemala City, Jan. 7, 
1917, II, III, 67g, 
Perymenium Purpusii Brandegee, Quezaltenango, Jan. 16, 1916, II, 
in, 734- 
Z'exmenia scandens HemsL, San Rafael, Dept. Guatemala, Jan. 9, 
1915, ii. III, 4S ; San Lucas Toliman, Dept. Solola, Feb. 3, 1915, 
ii. III, 183; Panajachel, Dept. Solola, Jan. 3, 1917, II, III, 668. 
A long-cycle species with aecia, very common in Mexico. 
98. TJromyces Salmeae Arth. & Hoi. sp. nov. (on Carduaceae). 
Salmea scandens (L). DC., San Lucas Toliman, 7000 feet alt., 
Dept. Solola, Feb. 3, 1915, o, I, II, iii, 188. 
Pycnia amphigenous, few in groups on discolored spots, subepi- 
dermal, noticeable, globoid or ellipsoid, 160-200 ix broad. 
Aecia amphigenous, grouped, cupulate, 0.1-0.2 mm. in diameter; 
peridium delicate, short; peridial cells soon collapsing, thin-walled, 
I /I, coarsely and closely verrucose; aeciospores ellipsoid or oblong, 
19-25 by 24-35 wall light cinnamon-brown, 1.5-2 ^, usually thicker 
above, up to 5 />t, closely and coarsely verrucose. 
Uredinia mostly hypophyllous, scattered, oval or oblong, 0.3- 
0.8 mm. long, early naked, pulverulent, ruptured epidermis evident; 
urediniospores obovoid or ellipsoid, 23-27 by 30-35 p.] wall cinnamon- 
brown, 1-1.5 M> moderately echinulate, the pores 2, slightly super- 
equatorial. 
Telia hypophyllous, scattered, oval or oblong, 0.3-0.8 mm. long, 
early naked, somewhat pulverulent, light chestnut-brown, ruptured 
epidermis noticeable; teliospores oblong or narrowly ellipsoid, 18-23 
by 35-50 M> narrowed above and below; wall golden-brown above, 
lighter to colorless below, thin, i ^t, much thickened above, 5-13 m> 
smooth; pedicel colorless, fragile, as long as the spore. 
99. Uromyces columbianus Mayor (on Carduaceae). 
Melanthera aspera (Jacq.) Steud., Escuintla, Feb. 18, 1916, II. 507; 
Mazatenango, Feb. 22, 1916, II, 5/2; San Felipe, Dept. Retal- 
huleu, Jan. 13, 1917, o, I, II, iii, yii. 
Melanthera oxylepis DC, Panajachel, Dept. Solola, Jan. 3, 191 7, o, 
I, II, 672. 
MelUnthera sp., Quirigua, Dept. Zacapa, March 22, 1916, I, II, 
602. 
A long-cycle rust with all spore forms, common in Central America 
and the West Indies, as well as in South America. 
