580 NORTH AMERICAN FLORA [VoLuME 7 
epidermis conspicuous; teliospores ellipsoid, 20-24 by 28-34 p, rounded at both ends, slightly 
or not constricted at septum; wall cinnamon- to chestnut-brown, 2-2.5 u thick, thickened 
to 5-7 » at apex and over pore of lower cell by a hyaline umbo, moderately verrucose-rugose, 
often with tendency to form reticulations or to arrangement in longitudinal lines, the pore 
of lower cell near pedicel; pedicel short, colorless, usually deciduous, often attached laterally. 
This species is correlated with Bullaria proba (Jackson & Holway) Arth® & Mains, being 
morphologically similar in telial characters,.and with similar hosts. The agreement doubtless 
indicates‘a common origin for the two species. 
ON CARDUACEAE: 
Zexmenia frutescens villosa (Polak.) Blake, Costa Rica. 
TYPE LOCALITY: San José, Costa Rica, on Zexmenia frutescens villosa. 
DistrisuTion: Known only from the type locality. 
134, Micropuccinia Rudbeckiae (Barth.) Arthur & Jackson. 
Puccinia Rudbeckiae Barth. MS. 
O. Pycnia not seen, probably not: formed. 
III. Telia amphigenous, closely gregarious and more or less confluent on discolored spots 
0.3-1 cm. across, small, round or irregular, 0.2-0.5 mm. across, somewhat tardily naked, 
pulvinate, ruptured epidermis conspicuous; teliospores oblong or cylindric, 12-18 by 45-70 n, 
rounded or obtuse above, the apex often bent to one side, somewhat narrowed or truncate 
below, not or slightly constricted at septum; wall light cinnamon-brown, thin, 1-1.5 y, slightly 
thicker above, 3-4 », smooth; pedicel firm: colorless, one half length of spore or less. 
On CarDUACEAE: 
Rudbeckia maxima Nutt., Texas. 
TYPE Locality: Longview, Texas, on Rudbeckia maxima. 
DistRIBUTION: Known only from the type locality. 
Exsiccati: Barth, N. Am. Ured. 
135. Micropuccinia ordinata (Jackson & Holway) 
Arthur & Jackson. 
Puccinia ordinata Jackson & Holway; Arth. Am. Jour. Bot. 5: 530. 1918. 
O. Pycnia not seen, probably not formed. 
III. Telia amphigenous, chiefly hypophyllous, crowded and confluent opposite yellowish 
sunken spots which become brownish with age, round, 1-2.5 mm. across, early naked, pulvinate, 
blackish becoming cinereous from germination, ruptured epidermis noticeable; teliospores 
oblong cylindric, 16-19 by 45-70 », rounded or obtuse at apex, narrowed below, slightly con- 
stricted at septum; wall cinnamon-brown, 1-2 y, darker and thickened above, 6-12 », smooth; 
pedicel short, deciduous, colored like the spore. 
ON CARDUACEAE: 
Calea insignis Blake, Guatemala. 
Calea integrifolia (DC.) Hemsl., Guatemala. 
TYPE LOCALITY: Quezaltenango, Guatemala, on Calea insignis. 
DIsTRIBUTION: Guatemala. 
136. Micropuccinia semota (Jackson & Holway) Arthur & Jackson. 
Puccinia semota Jackson & Holway; Arth. Am. Jour. Bot. 5: 531. 1918. 
Leptopuccinia semota Sydow, Ann. Myc. 20: 121. 1922. 
O. Pycnia unknown, probably not formed. 
III. Telia hypophyllous, crowded in small groups 1-2 mm. across, round, 0.3-0.5 mm. 
in diameter, early naked, compact, pulvinate, dark chestnut-brown, ruptured epidermis 
inconspicuous; teliospores clavate, 13-18 by 48-58 », rounded at apex, slightly narrowed 
below, slightly constricted at septum; wall golden-brown, thin, 1 m4, thickened at apex to 
10 2, smooth; pedicel colorless, up to 16 » long. 
On CARDUACEAE: 
Gymnolomia subflexuosa Benth., Guatemala. 
TYPE LOCALITY: Solola, Guatemala, on Gymnolomia subflexuosa. 
DISTRIBUTION: Known only from the type locality. 
