ARTHUR: NEW SPECIES OF UREDINEAE 33 
necessitating a new name for the latter, which has been supplied 
by Professor Jackson as above. 
Puccinia opposita (Orton) comb. nov. 
Allodus opposita Orton, Mem. N. Y. Bot. Gard. 6: 185. 10916. 
This species is still only known from the type collection on 
Anemone globosa Nutt., from Sulphur Springs, Colorado. 
Puccinia Erigeniae (Orton) comb. nov. 
Allodus Erigeniae Orton, Mem. N. Y. Bot. Gard. 6: 191. 1916. 
The type collection on. Erigenia bulbosa (Michx.) Nutt. was 
made by J. Dearness at London, Canada, in 1892, and distributed 
in Ellis’s: North American Fungi, No. rogob, under the name of 
P. Pimpinellae, and showed both aecia and telia. The only other 
collection known up to the present time was made by F. D. 
Kelsey at Oberlin, Ohio, April, 1894, showing aecia only. 
Uromyces coordinatus sp. nov. 
O. Pycnia hypophyllous, scattered abundantly over surface of 
leaf, preceding and accompanying the aecia, pale- or honey-yellow, 
barely noticeable, subepidermal, globoid or flask-shaped, 100-140 u 
broad; ostiolar filaments 50-75 u long, protruding above surface 
of leaf. 
I. Aecia hypophyllous, evenly scattered over surface of leaf, 
at first bullate and opening by a pore, 0.4—0.7 mm. across; peridia 
erect, or slightly recurved, erose; peridial cells cuboidal or poly- 
gonal, 22-24 by 23-29yn, abutted or slightly overlapping, the 
outer wall 10-12 yu thick, striate, the inner wall 3-5 u thick, notice- 
ably verrucose; aeciospores globoid or broadly ellipsoid, 15-19 by 
19-24 u; wall nearly or quite colorless, 1-2 » thick, finely verru- 
cose. : 
III. Telia hypophyllous, at first arising from and evenly filling 
the aecial cups, afterward independently but similarly grouped, 
the ruptured epidermis appearing like a peridium, somewhat 
pulverulent, dark chocolate-brown; teliospores irregularly ellip- 
soid, oblong or obovoid, 16-22 by 17-31»; wall cinnamon- or 
chestnut-brown, 1-2 thick, sometimes with a small colorless 
papilla over the apical pore, closely and noticeably verrucose, 
inclined at times to be striate; pedicel fragile, colorless, largely 
deciduous. 
On Tithymalus Palmeri (Engelm.) Arth. (Euphorbia Palmeri 
Engelm.), Laguna Mountains, California, July 19, 22, 1920; same, 
