496 NORTH AMERICAN FLORA [VoLUME 7 
III. Telia mostly hypophylious, scattered, usually along the leaf’s edge, round, small, 
0.1-0.4 mm. across, early naked, pulvinate, becoming somewhat pulverulent, chestnut-brown, 
ruptured epidermis inconspicuous; teliospores ellipsoid, 19-27 by 42-48 », rounded above, 
rounded or slightly narrowed below, slightly constricted at septum, germinating at maturity; 
wall cinnamon- or light chestnut-brown, 1-2 u thick, thickening gradually toward apex, up to 
5-7 », very faintly and minutely reticulate, often appearing smooth; pedicel hyaline, up to 
80 p long, fragile. 
On LoBELIACEAE: 
Lobelia sp., Morelos. 
TYPE LocaALITy: Cuernavaca, Mexico, on Lobelia sp. 
DISTRIBUTION: Known only from the type locality. 
29. Bullaria insulana (Arth.) Arthur & Mains. 
Argomyces insulanus Arth. Mycologia 7:179. 1915. 
Puccinia insulana H. S. Jackson, Bot. Gaz. 65: 296. 1918. 
O. Pycnia epiphyllous, few in crowded groups, globoid-flask-shaped, 105-175 by 170-200p. 
II. Uredinia of the primary form surrounding the pycnia, somewhat confluent; ure- 
diniospores slightly larger than in secondary uredinia, otherwise similar to the secondary 
form; secondary uredinia hypophyllous, few, scattered, round or oblong, small, 0.3-0.5 mm. 
long, early naked, pulverulent, dull cinnamon-brown, ruptured epidermis evident; wredinio- 
spores of both forms ellipsoid or obovoid, 19-26 by 26~35 »; wall cinuamon-brown, moder- 
ately echinulate, 1.5-2.5 » thick, the pores usually 3, equatorial or slightly subequatorial, 
indistinct. 
III. Telia hypophyllous, few, usually scattered, round or oblong, 0.3-0.8 mm. long, 
early naked, dull cinnamon-brown, germinating at maturity, ruptured epidermis evident; 
teliospores broadly ellipsoid or ellipsoid-fusiform, 19-30 by 42-60 yu, obtuse, or somewhat 
attenuate at both ends, slightly constricted at septum; wall pale cinnamon-brown, thin, 
1-1.5 », with a low hyaline papilla over the pore disappearing at germination, smooth, the 
pore in lower cell near septum; pedicel colorless, once length of spore or less. 
ON CARDUACEAE: 
Vernonia albicaulis Pers., Porto Rico; St. Croix. 
Vernonia arborescens (1,.) Sw. (V. divaricata Sw.), Jamaica. 
Vernonia longifolia Pers., Porto Rico; Antigua. 
Vernonia sp., Guatemala. 
TYPE LOCALITY: {Dos Bocas], river junction below Utuado, Porto Rico, on Vernonia albicaulis, 
DIsTRIBUTION: Guatemala and the West Indies. 
30. Bullaria Arthuriana (H. S. Jackson) Arthur & Mains. 
Argomyces Vernoniae Arth. N. Am. Flora 7:218. 1912. Not Bullaria Vernoniae Arth. 1917. 
Puccinia Arthuriana H. S. Jackson, Bot. Gaz. 65: 395. 1918. 
O. Pycnia epiphyllous, gregarious, few in groups 0.5-1 mm. across, punctiform, dark 
reddish-brown, globoid, 80-115 » in diameter; ostiolar filaments about 35 yw long. 
II. Uredinia hypophyllous, solitary or often surrounded by the telia, not usually abundant, 
roundish, about 0.5 mm. across, bright cinnamon-brown, ruptured epidermis evident; ure- 
diniospores flattened-globoid or globoid, 24-29 » broad by 23-26» long; wall pale-yellow, 
1.5-2 » thick, moderately and prominently echinulate, ‘the pores indistinct, apparently 4, 
equatorial. ° 
Ill. Telia hypophyllous, usually in irregular groups 1.5-2 mm. across, roundish, 0.2-0.3 
mm. across, pulvinate, light chestnut-brown, or cinereous by germination, ruptured epidermis 
not conspicuous; teliospores narrowly ellipsoid or fusiform, 16-24 by 55-70, narrowed 
above and below, usually considerably constricted at septum; wall cionamon-brown, uni- 
formly thin, about 1 u, smooth; pedicel fragile, colorless, one half to once length of spore. 
On CARDUACEAE: 
Vernonia albicaulis Pers., Porto Rico. 
Vernonia arbuscula Less., Bahamas. 
Vernonia bahamensis Griseb., Bahamas. 
Vernonia boringuensis Urban, Porto Rico. 
Vernonia canescens H.B.K., Costa Rica. 
Vernonia sericea Rich., Porto Rico. 
TYPE LOCALITY: Cayey, Porto Rico, on Vernonia borinquensis. 
DISTRIBUTION: Costa Rica and the West Indies. 
