Part 8, 1922] AECIDIACEAE 601 
soon naked, ruptured epidermis noticeable; urediniospores obovate, 16-21 by 23-27h; 
wall golden-brown, rather thin, 1.5~2, sparsely and finely echinulate, the pores 2, op- 
posite and equatorial. 
Ill. Telia chiefly epiphyllous, scattered, very small, 0.3 mm. or less across, usually 
punctiform, often confluent, early naked, becoming somewhat pulverulent, blackish-brown, 
ruptured epidermis not conspicuous; teliospores ellipsoid, 21-27 by 39-45 yw, obtuse or rounded 
above, rounded or sometimes narrowed below, slightly or not constricted at septum; wall 
dark chocolate-brown, minutely verrucose-rugose, moderately thick, 1.5-2.5 4, thicker above, 
3-5 wu, concolorous; pedicel colorless except next the spore, firm, tapering downward, twice 
length of spore, lowest third noticeably roughened. 
ON CaRDUACEAE: 
Zaluzania asperrima Schultz-Bip., Puebla. 
TYPE LocaLity: Tehuacan, Mexico, on Zaluzania asperrima. 
DIsTRiBvuTION: Known only from the type locality. 
34. Puccinia nanomitra Sydow, Monog. Ured. 1: 182. 1902. 
II. Uredinia chiefly hypophyllous, scattered, round, small, 0.2-0.5 mm. in diameter, 
early naked, pulverulent, cinnamon-brown, ruptured epidermis noticeable; urediniospores 
obovate, 24-26 by 26~30 #; wall cinnamon-brown, thin, 1-1.5 p, finely and closely echinulate, 
the pores 2, opposite and equatorial. 
III. Telia chiefly epiphyllous, scattered, round, small, 0.2-0.5 mm. in diameter, soon 
naked, blackish, pulverulent, ruptured epidermis inconspicuous; teliospores broadly ellipsoid, 
26-30 by 35-42 uw, semiopaque in water, rounded at both ends, not constricted at septum; 
wall chocolate-brown, 3-4 u thick, closely and moderately verrucose, thickened by a lighter 
colored umbo to 5~7 4 at apex and over pore of lower cell which is usually placed midway 
between septum and pedicel; pedicel colgrless, often attached obliquely, once to twice length 
of spore. 
On CARDUACEAE: 
Viguiera eriophora Greenman, Oaxaca. 
Viguiera helianthoides H.B.K. (V. dentata Spreng.), Oaxaca. 
TYPE LOCALITY: Oaxaca, Mexico, on Viguiera dentaia. 
DistrrButTion: Southern Mexico in vicinity of the type locality. 
Exsiccati: Barth. Fungi Columb. 4668; Barth. N. Am. Ured. 1260. , 
35. Puccinia Electrae Dietel & Holway; Holway, Bot. Gaz. 
31: 333. 1901. 
Puccinia Coreopsidis Jackson & Holway; Arth. Am. Jour. Bot. 5: 536. D1918. Not P. Coreop- 
sidis Wakefield, Au 1918. 
Puccinia additicia Jackson & Holway; Arth. Bull. Torrey Club 48: 32. 1921. 
II. Uredinia amphigenous, scattered or somewhat gregarious, circular or oval, 0.2-0.5 
mm. across, early naked, pulverulent, dark cinnamon-brown, ruptured epidermis membranous 
and conspicuous; urediniospores obovoid, 20-26 by 28-32 4%; wall golden-brown, 1.5-2.5 uw 
thick, prominently and sparsely echinulate, the pores 2, slightly superequatorial. 
III. Telia amphigenous, scattered, circular or oval, 0.2-0.8 mm. across, early naked, 
pulverulent, dark chestnut-brown, ruptured epidermis conspicuous; teliospores oblong or 
narrowly ellipsoid, 23-28 by 35-45 u, rounded above, rounded or slightly narrowed below, 
slightly constricted at septum; wall dark chestnut-brown, 3-4 thick, slightly thickened 
above, 5—7 uw, strongly and sparsely verrucose; pedicel slightly tinted next the spore, otherwise 
colorless, firm, twice length of spore, lower third noticeably roughened. 
a Ci DC. (C. mexicana Hemsl., Electra Galeottti A. Gray), Oaxaca; Guatemala, 
TYPE LocaLIty: Oaxaca, Mexico, on Electra Galeottii. 
DISTRIBUTION: Southern Mexico and Guatemala. 
Exsiccatt: Barth. N. Am. Ured. 1439; Sydow, Ured. 2022. 
36. Puccinia Iostephanes Dietel & Holway; Holway, Bot. Gaz. 
31: 334. 1901. 
II. Uredinia not seen; urediniospores obovoid or cuneate, 22-26 by 23-30 un, slightly 
