Part 7, 1922] AECIDIACEAE 507 
II. Uredinia of the primary form epiphyllous, crowded on slightly raised spots surrounding 
the pycnia; secondary uredinia chiefly hypophyllous, scattered or gregarious, roundish, 
small, 0.2-0.4 mm. across, early naked, pulverulent, cinnamon-brown, ruptured epidermis 
conspicuous; urediniospores of both forms obovoid or broadly ellipsoid, 16-19 by 20-24 u; 
wall colorless or light golden-yellow, 1-1.5 y, finely and moderately echinulate, the pores 2, 
equatorial. 
III. Telia chiefly hypophyllous, scattered, round, small, 0.2-0.4 mm. across, early naked, 
pulvinate, chocolate-brown becoming cinereous from germination, ruptured epidermis con- 
spicuous; teliospores ellipsoid or obovate, 16-20 by 26-34, rounded above, rounded or 
somewhat tapering below, not or slightly constricted at septum; wall in the germinating 
condition cinnamon- or light chestnut-brown, obscurely verrucose above, smooth below, 
1-2 » thick, in the resting condition chocolate-brown, uniformly and finely verrucose-rugose, 
2-3 » thick, thicker at apex, 3-7 » by a broad lighter-colored umbo; pedicel colorless, once 
to once and a half length of spore, or more frequently deciduous. 
On CaRDUACEAE: 
Zexmenia elegans Schultz-Bip., Guatemala. 
Zexmenia frutescens (Mill.) Blake, Costa Rica; Guatemala. 
Zexmenia Salvinii Hemsl., Guatemala. 
TYPE LOcaLITy: Quirigua, Guatemala, on Zexmenia frutescens. 
DistTRiBuTION: Central America. 
54. Bullaria Enceliae (Dietel & Holway) Arth. Résult. Sci. 
Congr. Bot. Vienne 346. 1906. 
Puccinia Enceliae Dietel & Holway; Holway, Bot. Gaz. 24:32. 1897, 
O. Pycnia amphigenous, in loose orbicular groups 1-2 mm. across, prominent, honey- 
yellow becoming light-brown, globoid, 110-150 » in diameter; ostiolar filaments 100-130 pz 
long. 
II. Uredinia of the primary form amphigenous, oblong, confluent with a ring about 
the pycnia, prominent, pulvinate, 0.4-0.6 mm. across, dark cinnamon-brown; uredinia of 
the secondary form hypophyllous, scattered, round, small, 0.3-0.5 mm. across, pulverulent, 
light cinnamon-brown, ruptured epidermis inconspicuous; urediniospores globoid or obovate- 
globoid, 18-24 by 20-28; wall cinnamon-brown, moderately thin, 1.5-2 4, closely and 
minutely echinulate, the pores 2, equatorial. : 
III. Telia hypophyllous, scattered, early naked, round, 0.3—0.5 mm. across, pulvinate, 
blackish-brown, ruptured epidermis inconspicuous; teliospores elliptic or obovate-ellipsoid, 
22-29 by 30-42 4, rounded at both ends, or slightly narrowed below, slightly constricted 
at septum; wall chestnut-brown, moderately thick, 2-3 u, thicker above by a broad umbo, 
6-9 », smooth; pedicel colorless, firm, once to twice length of spore. 
On CARDUACEAE: 
Geraea viscida (A. Gray) Blake (Encelia viscida A. Gray), California. 
Simsia adenophora (Greenm.) Blake (Encelia adenophora Greenm.), Jalisco, Oaxaca. 
Simsia foetida (Cav.) Blake (Encelia mexicana Mart.), Morelos. 
Simsia Holwayt Blake, Guatemala. 
Simsia polycephala (Hemsl.) Benth. (Excelia polycephala Hemsl.), Guatemala. 
Simsia sericea (Hems!.) Blake (Encelia sericea Hemsl.), Guatemala. 
TYPE LOCALITY: Cuernavaca, Mexico, on Encelia mexicana. 
DistRIBgutTION: From southern California through Mexico and Central America. 
Exsiceatr: Barth. N. Am. Ured. 235, 340, 1240. 
55. Bullaria Gaillardiae (Dietel & Holway) Arthur & Mains. 
Uredo Gaillardiae Dietel & Holway; Dietel, Erythea 7:98. 1899. 
O. Pycnia amphigenous, thickly scattered over large areas, punctiform, dark-brown, 
prominent, globoid, 80-128 » in diameter; ostiolar filaments 32-55 y long. 
II. Uredinia hypophyllous, loosely scattered from a diffused mycelium, ea'ly naked, 
applanate, round, large, 0.4-0.6 mm. across, moderately pulverulent, cinnamon-brown, rup- 
tured epidermis noticeable; urediniospores globoid or broadly ellipsoid, 24-30 by 28-33 n, 
often somewhat flattened on the sides bearing pores; wall cinnamon-brown, moderately 
thick, 2-3 u, evenly echinulate, the pores 2, equatorial. 
