a 



1901] MEXICAN FUNGI 335 
Puccinia conjuncta Diet. & Holw., n. sp.—Sori epiphyllous, 
a few scattered ones epiphyllous, of medium size, except on the 
petioles and stems, where they break through the epidermis in 
large patches, pulverulent, dark brown; teleutospores strongly 
constricted, of two almost globose cells, 34—45 X 22—28y, brown, 
echinulate, apex with a slight cucullate thickening; pedicel 
short, deciduous. 
On Lippia Pringlei, Oaxaca, October 23, 1899, no. 3719B. Collected at 
about 10,000 feet, where there were no specimens of Uredo Lippiae D. & H. 
to be found. The latter occurred at about 6000 feet. 
Puccinia Coulterophyti Diet. & Holw., n. sp.—Spots yellow 
or wanting; sori hypophyllous, small, scattered; uredosori light 
ochre color; uredospores obovate, 29-36 X 22-29P; epispore 
hyaline, apex very strongly thickened, covered with distant, 
globose warts; teleutosori blackish-brown, naked, pulverulent ; 
teleutospores long elliptical or irregular, rounded at both ends, 
scarcely constricted, 33-50 X 23-30; epispore chestnut-brown, 
verrucose, sometimes irregularly rugose; pedicel deciduous. 
One-celled teleutospores are not uncommon. 
On Coulterophytum laxum Rob., Chapala, September 19, no. 3463; 
Uruapam, October 11, no. 3621. These hosts were determined for me at the 
Gray Herbarium, The leaflets differ, however, the former being smooth, 
while the latter are densely white-tomentose. 
Uredo Lippiae Diet. & Holw., n. sp.—Sori hypophyllous, 
scattered, dark brown, pulverulent; uredospores globose or 
broadly elliptical, 25-32 x 25-28; epispore dark brown, closely 
echinulate, to 3u thick, with two germ pores. Hyaline ampulla- 
ceous paraphyses are found in the sori. 
On Lifpia Pringlei, Oaxaca, October 23, 1899, no. 3719. Collected at 
about 6000 feet. No trace of Puccinia conjuncta D. &. H. could be found at 
this elevation. 
UREDO Arbut! Diet. & Holw.— On Arbutus diversifiora, Oaxaca, Octo- 
ber 18, 1899, no. 3662. 
RAVENELIA EPIPHYLLA Schw.—On Brongniartia, Guadalajara, September 
