35 
* 
constricted at the septum, .002 to .0025 in. long, .0014 to .0016 
broad ; pedicels equalling or exceeding the spores in length. 
On living leaves of Brickellia. Arizona. September, M, E. 
Jones. •* 
PucciNiA Pentstemonis. — Spots none ; sori amphigenous, un- 
equal_ in size, prominent, black ; teleutospores elliptical or oblong- 
elliptical, .0012 to .002 in long, .0008 to .0011 broad ; pedicel hya- 
line, generally much longer than the spore. 
Living leaves of Pentsiemon Unarioidcs. Arizona. September. 
M. E. Jones. 
^cidial and uredo-forms not present. Whether ^cidium Pent- 
stemonis, Schw., belongs to this Pticcinia is uncertain. 
PucciNiA Malvastri. — Spots obliterated ; sori clustered, con- 
fluent, amphigenous, dark reddish brown, compact, prominent ; 
spores oblong-elliptical, scarcely constricted, even, obtuse or rarely 
obtusely pointed, .0019 to .0025 in. long, .0009 to .0012 broad ; the 
pedicel longer than the spore, generally two to four times its length, 
hyaline. 
On living leaves of Malvastrum. Arizona. September, M. E. 
Jones. ^ 
This differs from P, Malvacearmn^ of which I was at first inclined 
to believe it a variety, in its different habit, darker colored sori, com- 
paratively broader spores and genefelly longer pedicels. 
PucciNiA ViGuiER^. — Sori numerous, prominent, amphigenous, 
blackish brown; spores oval or broadly elliptical, obtuse, slightly con- 
stricted at the septum, .0016 to .002 in. long, .0011 to .0012 broad, 
with a hyaline pedicel longer than the spore. 
Leaves of Viguiera, New Mexico. April. M. E. Jones. 
The species is closely related to P\ Helianthi, Schw., and P. vari- 
olans. Hark., from both of which it is distinguished by its broader 
spores. 
Uromvces Sophor^. — Sori numerous, small, amphigenous, red- 
dish brown; spores subelHptical, nearly even, .0011 to .0014 in. long, 
•00065 to .0008 broad, the epispore thickened at the apex, the pedicel 
shorter than the spore- 
Living leaves of SopJiora sertcea. New Mexico. October. M. 
E. Jones. 
The sori are thickly scattered over both surfaces of the leaves. 
The species is closely related to U. apiculatus. 
UsTiLAGO AristiDv^i:. — Spores small, .0003 to .00035 in. in diame- 
ter, subglobose, more or less angular, even, black, occupying the 
whole interior of the seed. 
Spikelets of Aristida. El Paso, Texas. September. M. E. 
Jones. *- 
Every seed in the panicles sent me is affected by the fungus. 
The seeds do not appear to be much enlarged, but the whole interior 
^s transformed to a dusty mass of spores enclosed by the thin external 
shell or membrane. The species is apparently related to the South 
American U. Lorentziana, Thuui., and the African U. Penniseti, 
•^abh., but is easily distinguished from both of these by its more 
angular spores. 
