UREDINALES OF GUATEMALA 
475 
teliospores ellipsoid or oblong, 29-31 by 37-45 At» rounded above, blunt 
below, slightly constricted at septum; wall golden- or cinnamon- 
brown, rather thick, 1.5-2.5 thicker above, 4-7 ^t, rugosely verru- 
cose; pedicel colorless, fragile. 
The species appears like a short-cycle form, and the presence of 
urediniospores does not necessarily exclude that possibility. Section- 
ing for pycnia failed to disclose the presence of such a stage. 
140. Puccinia aucta Arthur & Holway sp. nov. (on Dilleniaceae). 
Saurauja Conzatti Busc. (?), Chinautla, Dept. Guatemala, Jan. 17, 
1915, go; Guatemala City, Dec. 20, 1916, 608. 
Saurauja Smithiana Busc. (?), Huehuetenango, Jan. 23, 191 7, 
775; Colomba, Dept. Quezaltenango, Feb. 2, 191 7, 8ig\ road 
between Colomba and Quezaltenango, Feb. 4, 191 7, 830 (type). 
Saurauja sp., Guatemala City, Feb. 8, 191 7, 844. 
Telia hypophyllous, crowded in small mostly confluent groups 
0.5-2 mm. across on somewhat larger purple spots, round, 0.1-0.5 
mm. in diameter, early naked, pulvinate, chocolate-brown, ruptured 
epidermis inconspicuous; teliospores oblong, 10-15 by 32-42 /x, 
rounded or obtuse at both ends, often narrowed below, somewhat 
constricted at septum; wall light chestnut-brown, or lighter after 
germination, 1.5-2 jj, thick, much thicker above, 3-10 /x, smooth; 
pedicel light brown to colorless, once to twice length of spore or shorter, 
persistent. 
A short-cycle rust, causing abundant spotting on both sides of the 
leaves. Probably no pycnia are formed. Germination takes place 
readily in situ at maturity. The several collections appear to belong 
possibly to two or more species of host, as the leaves vary from smooth 
to strongly pubescent. 
141. Puccinia ViOLAE (Schum.) DC. (on Violaceae). 
Viola nannei Polak., Volcan de Agua, Dept. Sacatepequez, March 
7, 1916, II, III, s66; same, Dec. 29, 1916, II, III, 656, 
A long-cycle rust, common on violets in both America and Europe, 
having somewhat variable characters. 
142. Puccinia Cupheae Holw. (on Lythraceae). 
Cuphea Hookeriana Walp., Solola, 5500 feet alt., Jan. 27, 1915, 133. 
A short-cycle species, rather common in Mexico and Central 
America. 
