198 BOTANICAL GAZETTE [SEPTEMBER 
lous, crowded in orbicular groups, often circinating about the spermo- 
gonia, on stems causing small swellings up to 1°™ long, on discolored 
spots, very small, 0. 2-0. 3™™ across, round, somewhat waxy; peridia 
wanting; spores ellipsoid, more or less angular from pressure, 20-25 
by 24-36, wall golden-brown, smooth, medium thick, 1. 5-2. 
On Eupatorium patzcuarense HBK., Amecameca, Oct. 21, 1903, NO. 5205 
(type): Eupatorium sp., near City of Mexico, Oct. 9, 1898, no. 3033- 
This and the following are the first species belonging to this genus reported 
from North America. They both differ from the type in the absence of a perid- 
ium, and in the presence of spermogonia. Like the type, however, they both 
have the sori separated from the tissues of the host by a filamentous layer of 
delicate, colorless hyphae. The form on Eupatorium is waxy, with smooth con- 
solidated spores, like the type, the spores germinating in the sorus upon maturity. 
The form on Vernonia is not waxy, but pulverulent. 
to. Dietelia Vernoniae, n. sp.—Spermogonia chiefly epiphyl- 
lous, numerous, crowded in orbicular groups, punctiform, golden- 
yellow becoming brown, prominent, subepidermal, depressed-globoid 
or somewhat conical, 130-145 broad; central cavity large; ostiolar 
filaments becoming agglutinate: teleutosori hypophyllous, crowded 
opposite the spermogonia in annular groups of 2-7, or solitary, round, 
©.5™™ across, soon naked, pulverulent, ruptured epidermis notice- 
able; peridia wanting; teleutospores ellipsoid or globoid, more OF 
less angular and irregular from pressure, 22-27 by 30-37 wall 
very pale yellow, medium thick, 1.5-2/, closely and strongly vertu: 
cose, except a small spot at the base, tubercles somewhat deciduous. 
On Vernonia (probably V. Deppiana Less.), Jalapa, Mex., Oct- 5 1898, 
no. 3111. 
11. Puccrytosira BRICKELLIAE Diet. and Holw. 
” On Brickellia secundiflora A. Gr., Pachuca, Oct. 27, 1903, 00. 5249: Brick- 
lia sp., Guadalajara, Sept. 22, 1903, no. 5020; Zapotlan, State of Jalisco, Oct. 
TO, 1903, no. 5144; Amecameca, Nov. 20, 1903, no. 5428. 
12. UREDO ParTHENt! Speg. 
On Parthenium hysterophorus L., San Andres Chalchicomula, n¢4t - 
Orizaba, Oct. 8, 1898, no. 3228. 
13. Aciprum Curpapr Syd. 
On Clibadium arboreum J. D. Smith, Jalapa, Oct. 2, 1898, no. 3114: 
14. Uromyces senecionicola, n. sp.—Teleutosori hypophyllous,. 
