Part 8, 1922] AECIDIACEAE 597 
20. Puccinia punctoidea Sydow, Monog. Ured. 1: 182. 1902. 
II. Uredinia not seen; urediniospores globoid, 24-29 » in diameter; wall golden-yellow, 
rather thin, 1-1.5 «, sparsely and moderately echinulate, the pores 2 or possibly 3, equatorial. 
III. Telia epiphyllous or amphigenous, scattered, early naked, pulvinate, small, 0.3-0.7 
mm. across, chocolate-brown, somewhat pulverulent, ruptured epidermis inconspicuous; 
teliospores ellipsoid or obovate-ellipsoid, 20-25 by 32-42, rounded at both ends or somewhat 
narrowed below, slightly constricted at septum; wall smooth, chestnut-brown, uniformly 
thick, 3-3.5 u, the pore of each cell noticeable, depressed halfway, often with internal callous; 
pedicel colorless, delicate, once length of spore or less, largely deciduous. 
On CARDUACEAE: 
Viguiera Pringleit Rob. & Greenm., Jalisco. 
TYPE LOCALITY: Hills near Zapotlan, Mexico, on Viguiera Pringlei. 
DistRIBUTION: Known only from the type locality. 
21. Puccinia turgidipes H. S$. Jackson, Mycologia 14: 110. 1922, 
II. Uredinia not seen; urediniospores in the telia, strongly compressed laterally, when 
viewed with pores in optical section, oblong, 16-18 by 26-29 », when in face view, globoid, 
24-27 by 26-29 u; wall dark cinnamon-brown, 2.5—-3 4 thick, moderately and prominently 
echinulate, the pores 2, opposite and equatorial. 
III. Telia amphigenous, scattered, round, small, 0.2-0.5 mm. in diameter, early naked, 
becoming pulverulent, blackish-brown, ruptured epidermis not noticeable; teliospores globoid 
or broadly ellipsoid, 30-32 by 32~38 u, rounded at both ends, not constricted at septum; 
wall chestnut-brown, 3-4 u thick, thickened at apex to 6 u, as well as over pore of lower cell 
near septum, smooth; pedicel colorless, once to twice length of spore, with thick walls abéve, 
becoming abruptly inflated 12-24 u from point of attachment. 
On CARDUACEAE: 
Viguiera deltoidea Parishii (Greene) Vasey & Rose, Arizona. 
Type Locality: Baboquivari Mountains, Arizona, on Viguiera delioidea Parishii. 
DIstTRIBUTION: Known only from the type locality. 
22. Puccinia Tithoniae Dietel & Holway; Holway, Bot. Gaz. 
24: 31. 1897. 
II. Uredinia hypophyllous, scattered, round, small, 0.2-0.5 mm. across, early naked, 
pulverulent, cinnamon-brown, ruptured epidermis usually not conspicuous; urediniospores 
globoid or angularly obovoid, 19-23 by 20-26 »; wall light cinnamon-brown, thin, 1 », very 
minutely and closely echinulate, the pores 2, slightly subequatorial. 
III. Telia hypophylious, scattered, round, small, 0.2~0.5 mm. across, usually early naked, 
pulvinate, chocolate-brown, ruptured epidermis usually inconspicuous; teliospores oblong or 
oblong-obovate, 22-26 by 34-48%, rounded at both ends, slightly constricted at septum; 
wall chestnut-brown, moderately thick, 1.5-2.5 », thickened above, 6-10 u, usually with ill- 
defined semi-hyaline umbo, smooth; pedicel colorless, rather firm, as long as spore. 
On CARDUACEAE: 
Tithonia diversifolia (Hemsl.) A. Gray, Guatemala. . . 
Tithonia rotundifolia (Mill.) Blake (T. speciosa Hook., T. tagetiflora Desf.), Jalisco, Morelos; 
Costa Rica; Guatemala. 
Tithonia scaberrima Benth., Guatemala. : : : 
Tithonia tubaeformis (Jacq.) Cass., Guanajuato, Hidalgo, Mexico (state); Guatemala. 
‘Tve# Locairty: City of Mexico, Mexico, on Tithonia ‘‘cubiflora,”’ error for T. tubaeformis. 
DIstRIBUTION: Southern Mexico and Central America. 
Exsiccatt: Barth. Fungi Columb. 4674; Barth. N. Am. Ured. 1274. 
23. Puccinia Axiniphylli Arth. Bot. Gaz. 40: 201. 1905. 
II. Uredinia not seen; urediniospores in the telia ellipsoid or globoid, 16-24 by 21-26 p; 
wall yellowish, thin, 1-1.5 », moderately and strongly echinulate, the pores indistinct, probably 
2 and equatorial. 
III. Telia hypophyllous, irregularly gregarious or scattered, somewhat confluent, smail, 
tardily and imperfectly naked, becoming somewhat pulverulent, dull chestnut-brown, ruptured 
