24 BOTANICAL GAZETTE [yuLy 
hollow, attached to the spore by a brown spreading collar: 
uredospores (a few found among the teleutospores) ovate, about 
36 long, shortly aculeate, thickened at apex, brown, lighter 
towards the base.—On some euphorbiaceous tree, Cuernavaca, 
Sept. 22. 
Uromyces Solani Diet. & Holw., n. sp.—Sori hypophyllous, 
on small yellow spots, scattered, small, naked: uredospores 
obovate, 23-33 by 18—2Ip, pale-brown, echinulate, with four 
equatorial germ-pores: teleutospores clavate, or narrowly ovate, 
narrowed towards the pedicel, mostly beak-like at apex, 30-48 
by 10-174, smooth, light chestnut-brown, colorless towards apex. 
—On Solanum appendiculatum, Cuernavaca, Sept. 23. 
Uromyces Carapi1(Schw.) Farlow.— On Arisema Dracontium, 
Cuernavaca, Sept. 23. 
UROMYCES BREVIPES (B. & Rav.).—On Rhus Toxicodendron, 
Cuernavaca, Sept. 23. Not U. terebinthi (DC.), to which it is 
usually referred, the uredospores being quite distinct. 
Uromyces striatus Schrét.—II only. On Medicago lupulina 
and M. denticulata, near Tula, Oct. 6; MW. lupulina, near City 
of Mexico, Oct. 7. 
Uromyces Mexicanus Diet. & Holw., n. sp.—Sori mostly 
hypophyllous, also on the pedicels and stems; spots inconspicu- 
ous, brown or yellow, often wanting: uredosori scattered or in 
irregular groups, cinnamon-brown; spores broadly elliptical or 
globose, 18-23 by 17-—21p, pale brown, echinulate: teleutosori 
pulvinate, black, naked, on the leaves small, on the stems and 
pedicels larger and elongated; spores ovate, rarely almost glo- 
bose, thickened at apex and often narrowed to a short conical 
point, 23-30 by 18-22, smooth, chestnut-brown ; pedicel color- 
less, slender, up to 1004 long, narrowed towards the base.—On 
Desmodium, City of Mexico, Oct. 9; Guadalajara, Oct. 11; 
Cuernavaca, Sept. 22. 
Uromyces obscurus Diet. & Holw., n. sp.—Aécidia hypophyl- 
lous, scattered, at first sunk in the parenchyma, then erumpent, 
without pseudoperidia, flat, orange-red ; zcidiospores when fresh 
yellowish-red, globose or elliptical, 17-25 by 17—20u, smooth: 
