


1901 | MEXICAN FUNGI 349 
prolonged into a point, mostly rounded at base, little constricted, 
24-45 X 14-24, smooth, variously thickened at apex according 
to the form of the spore; pedicel rather longer than the spore, 
tinted, firm; one-celled teleutospores rather common. 
On Serberis trifolia, Rio Hondo, near City of Mexico, October 4, 1899, 
no. 3570. The Aecidium of Puccinia graminis occurs on some of the leaves. 
Puccinia Aniscanthii Diet. & Holw., n. sp.—Sori on both 
sides of the leaf, scattered, small; uredosori brown; teleutosori 
black, naked ; uredospores elliptical or obovate, 22-28 X 18-224, 
light brown, with distant short spines, and two germ-pores ; 
teleutospores elliptical, rounded at both ends, slightly con- 
stricted, 38-48 X 25-31, chestnut-brown, at the apex and often © 
on the lower cell a cucullate or papilla-like light-colored thicken- 
ing, verrucose; pedicel longer than the spore, hyaline, apd 
separating at the base, sometimes laterally inserted. 
On Antsacanthus, probably 4. Wrightii, near Acamboro, October 8, 1899, 
no. 3595. This species is much like Puccinia Ruelliae-Bourgaei Diet. & 
Holw., but that has almost all the pedicels laterally inserted, and the mem- 
brane is not thickened over the germ-pores. Puccinia Blechi Lagerheim 
appears to be very similar, but according to the description the teleutospores 
are differently colored, and also without the thickening over the germ-pores. 
Puccinia Ruelliae-Bourgaei Diet. & Holw., n. sp—Aecidia in 
irregular groups along the veins; cells of the pseudosporidia 
oblong ; aecidiospores elliptical or globose, often angular, 
25-38 X 20-26, yellowish, strongly verrucose, much thickened 
at apex; uredospores in these specimens few, with the teleuto- 
spores, brown, echinulate, 20-25; teleutosori hypophyllous on 
yellow spots, sparingly epiphyllous, scattered, 0.5—2™™ in diam- 
eter, black, pulverulent, naked; teleutospores elliptical, rounded 
at both ends, not at all or only slightly constricted, 35-41 x 27— 
324, dark chestnut brown, with large tubercles ; pedicel as long 
or longer than the spore, hyaline, rough, inserted at one side. 
On Ruellia Bourgaei, Chapala, September 20, 1899, no. 3471. Closely 
resembles Puccinia laterifes B. & R., but has much larger and darker 
teleutospores ; the aecidiospores are also larger and remarkable for their 
Strong apical thickeni ing. 
