Part 8, 1922] AECIDIACEAE 589 
7. Uromyces agnatus Arth. Bull. Torrey Club 38: 378. 1911. 
II. Uredinia chiefly hypophyllous, scattered, often confluent, irregularly roundish, 0.2— 
0.5 mm. across, at first bullate, soon naked, pulvertulent, light cinnamon-brown, ruptured 
epidermis conspicuous; urediniospores broadly ellipsoid, 18-23 by 21-29 yw; wall light golden- 
brown, rather thick, 1.5-2.5 u, sparsely and rather inconspicuously echinulate, the pores 2, op- 
posite and equatorial, usually distinct. 
III. Telia chiefly hypophyllous, scattered, sometimes confluent, roundish, 0.1-0.4 mm. 
across, at first bullate, soon naked, pulverulent, dark chocolate-brown, ruptured epidermis 
conspicuous; teliospores ovoid or ellipsoid, 23-29 by 29-35 u, narrowed or rounded above, 
rounded below; wall chestnut-brown, thick, 3~—4 yz, slightly thicker above, 5-7 4, coarsely 
and irregularly verrucose; pedicel colorless, slender, fragile, about length of spore. 
On EUPHORBIACEAE: 
Bivonea stimulosa (Michx.) Raf. (Cnidoscolus stimulosus A. Gray, Jatropha stimulosa 
Michx.), Florida, South Carolina. 
Type LocaLity: Dunedin, Florida, on Jatropha stimulosa. 
DistRIBUTION: Southern South Carolina to southern Florida. 
8. Uromyces Hariotanus Lagerh.; Arth. Mycologia 10: 125. 
1918. 
III. Telia amphigenous, numerous, scattered or sometimes crowded, round or spreading, 
irregular, 0.2-1 mm. across, early naked, pulverulent, chocolate-brown, ruptured epidermis 
evident; teliospores ellipsoid, 19-21 by 26-32 u, slightly narrowed or rounded at both ends; 
wall chestnut- or cinnamon-brown, thick, 3-44, the apex thickened into a light-brown or 
colorless umbo, 6-9, closely or moderately and noticeably verrucose; pedicel colorless, 
fragile, tapering toward the base, frequently roughened below, about one and one half times 
length of spore. 
On ACANTHACEAE: 
Thyrsacanthus strictus Nees, Costa Rica. 
Tyre Locatity: Guamampata, Prov. Chimborazo, Ecuador, on Acanthaceae [probably Thyr- 
sacanthus strictus]. 
DIsTRIBUTION: Costa Rica; also in South America. 
9. Uromyces piauhyensis P. Henn. Hedwigia 47: 266. 1908. 
II. Uredinia hypophyllous, scattered, round, 0.2-0.3 mm. in diameter, early naked, 
pulverulent, cinnamon-brown, ruptured epidermis inconspicuous; urediniospores triangular- 
obovoid or flattened-globoid, 19-23 by 16-20; wall cinnamon-brown, 1.5 « thick, closely 
and finely echinulate, the pores 2, equatorial. 
Il. Telia hypophyllous, scattered, round, 0.2-0.5 mm. in diameter, early naked, pulver- 
wlent, chocolate-brown, ruptured epidermis inconspicuous; teliospores globoid, 26~32 » in 
diameter; wall dark chestnut-brown, thick, 3-5 u, thickened at apex into a yellowish umbo, 
7~10 w, moderately and finely conic-verrucose; pedicel colorless, up to twice length of spore. 
On CaRDUACEAE: 
Wedelia reticulata DC., Porto Rico. 
Wedelia rugosa Greenman, Cuba. 
Wedelia rugosa tenuis Greenman, Cuba. 
TyPE LOCALITY: Serra Nova, Piauhy¥, Brazil, on Wedelia sp. 
DIsTRIBUTION: West Indies; also in South America. 
10. Uromyces oblongisporus Ellis & Ev. Bull. Torrey Club 25: 
507. 1898. , 
JII. Telia amphigenous, scattered, round, 0.5-1 mm. in diameter, early naked, pulveru- 
lent, dark chocolate-brown, ruptured epidermis inconspicuous; teliospores oblong or ellipsoid, 
18~21 by 28-35 wu, rounded above and below; wall dark chestnut-brown, 2—2.5 » thick, thick- 
ened up to 5 at apex, sparsely and inconspicuously verrucose, appearing smooth below; 
pedicel colorless, fragile, about length of spore. 
ON CARDUACEAE: 
Artemisia tridentata Nutt., Wyoming. 
