MEXICAN FUNGI. III. 
E. W. D. HOLWay. 
THE descriptions of the following new species were sent to 
me in German by Dr. Dietel. I am under many obligations to 
Professor Robinson of the Gray Herbarium, and to C. G. Pringle 
tor the determination of the host plants. A large collection of 
Uredineae yet remains to be studied. 
Uromyces Celosiae Diet. & Holw., n. sp.—Sori hypophyllous, 
sometimes on indistinct yellow spots, small or medium-sized, 
scattered or often thickly covering the leaf; uredosori cinna- 
mon-brown; uredospores elliptical or globose, sometimes obo- 
vate, 27-34 X 24-26; epispore thick, thinly covered with strong 
Spines, with two germ-pores, brown; teleutosori dark brown, 
teleutospores elliptical or globose, coarsely verrucose, chestnut- 
brown, apex with a light colored rounded cucullate or papilla- 
like thickening, 28-38 X 22-30u; pedicel hyaline, as long as the 
spore, or a little longer, easily separating at the base from the 
we ‘plant, swelling in water. 
“On Celosia latifolia; Oaxaca, October 17, 1899, no. 3641. 
Uromyces venustus Diet. & Holw., n. sp.— Aecidia hypophyl- 
lous, single or in small groups, hemispherical, opening at apex 
by a small pore; aecidiospores globose or elliptical, 20-25 X 20H, 
finely verrucose, teleutosori epiphyllous, opposite the aecidia, 
often in a circle, the center of which is the aecidium on the 
opposite side of the leaf, variable in size, sometimes confluent, 
naked, pulverulent, dark brown; teleutospores ovate or ellip- 
tical, sometimes almost globose, 32-40 X 20-28, chestnut-brown, 
apex light brown, beak-like; epispore thick, with longitudinal 
lines; pedicel about the length of the spore, thin, hyaline, easily 
breaking at the base from the host-plant. _ 
AAA { In Cestrum nitidum, Amecameca, October 31, 1899, no. 3759- Easily 
¢ 326 [Ae 

