596 NORTH AMERICAN FLORA [VoLuME 7 
DISTRIBUTION: Greater Antilles; also in South America. 
Exsiccati: Barth. N. Am. Ured. 525. 
17. Puccinia pacifica Blasdale; Arth. Bull. Torrey Club 48: 31. 1921. 
II. Uredinia amphigenous, more abundant beneath, thickly scattered, irregularly rounded, 
0.3-1 mm. across, at first bullate, soon naked, somewhat pulverulent, dark chestnut-brown, 
ruptured epidermis very inconspicuous; urediniospores ellipsoid or obovate, 22-26 by 26-32 yu; 
wall chestnut-brown, 2-3 u thick, finely echinulate, the pores 2, equatorial. 
III. Telia similar to the uredinia but somewhat darker and less pulverulent; teliospores 
oblong or obovate-oblong, 20-24 by 38-48 u, rounded or obtuse above, obtuse or narrowed 
below, somewhat constricted at septum; wall chestnut-brown, lighter below, 1-1.5 « thick, 
thicker above, 3-7 u, smooth; pedicel colorless, fragile, once or twice length of spore when 
unbroken, 7-9 » in diameter. 
ON PLANTAGINACEAE: 
Plantago maritima L,., California. 
TYPE LOCALITY: Montara Point, San Mateo County, California. 
DistrRisvution: Known only from the type locality. 
Exsiccati: Barth. N. Am. Ured. 2667. 
18. Puccinia fallaciosa Arth. Mycologia 9:84. 1917. 
Uredo fallaciosa Arth. Mycologia 7: 323. 1915. 
II. Uredinia hypophyllous, irregularly gregarious on somewhat discolored spots, roundish, 
0.1-0.5 mm. across, tardily naked, pulverulent, fuscous; urediniospores ellipsoid or obovoid, 
18-23 by 24~29 u; wall pale-yellow or slightly fuscous, 1-1.5 » thick, moderately echinulate, 
the pores obscure. 
III. Telia hypophyllous, few, scattered, punctate, small, early naked, pulvinate, sur- 
rounding tissues much browned, ruptured epidermis inconspicuous; teliospores ellipsoid, 13 
16 by 26-31 u, rounded or narrowed slightly above and below, moderately constricted at 
septum, germinating at maturity; wall colorless or very pale-yellow, 1-1.5 » thick, uniform, 
smooth; pedicel colorless, short. 
On RUBIACEAE: 
Palicourea crocea (Sw.) R. & S., Porto Rico. 
Palicourea riparia Benth., Porto Rico. 
Psychotria patens Sw., Porto Rico. 
TyPE Locality: Maricao, Porto Rico, on Psychotria patens. 
DisTRIBUTION: Porto Rico. 
19. Puccinia Gnaphalii (Speg.) P. Henn. Hedwigia Beibl. 41: 
66. 1902. 
Uredo Gnaphalii Speg. Anal. Soc. Ci. Argent. 12: 73. 1881. 
Puccinia gnaphaliicola P. Henn. Hedwigia Beibl. 38: 68. 1899. 
Puccinia Gnaphalit Speg. Anal. Mus. Nac. Buenos Aires 19: 309. 1909. 
II. Uredinia mostly hypophyllous, numerous, scattered or gregarious, occasionally con- 
centrically arranged, roundish, 0.2-0.7 mm. across, early naked, pulverulent, pale cinnamon- 
brown, ruptured epidermis at first conspicuous; urediniospores globoid or broadly ellipsoid, 
18-23 by 23-26; wall cinnamon-brown, 1.5—-2.5 » thick, finely and closely echinulate, the 
pores 2, rarely 3, equatorial or slightly superequatorial. 
III. Telia hypophyllous, in arrangement, size, etc., conforming to the uredinia, compact, 
chestnut-brown; teliospores oblong, oblong-ovate, or oblong-clavate, 18-24 by 32-56 yu, rounded 
or rarely somewhat acute above, narrowed below, slightly constricted at septum; wall light- 
brown, thickened to 8 » at apex, smooth; pedicel colorless below, tinted above, about as long 
as spore; mesospores occasionally intermixed with the teliospores. 
On CARDUACEAE: . 
Gnaphalium purpureum L., Louisiana, South Carolina. 
Gnaphalium rhodanthum Schultz-Bip., Guatemala. 
Gnaphalium spathulatum Lam., Alabama, North Carolina. 
Type LocaLity: Chacarita, Argentina, on Gnaphalium americanum, 
DisrrRiButTion: North Carolina to Louisiana, and in Guatemala; also in South America, 
