328 NORTH AMERICAN FLORA [VolumE 7 
Poa arida Vasey (P. pratericola Rydb.), Nebraska. 
Poa Bigelovii Vasey & Scribn., New Mexico. 
Poa compressa 1,., Colorado, North Dakota. 
Poa interior Rydb., Colorado, Idaho; Alberta. 
Poa longipedunculata Scribn., Utah. 
Poa macrantha Vasey, Oregon. 
Poa nemoralis L,., Alberta. 
Poa palusiris L. (P. iriflora Gilib., P. serotina Ehrh.), Colorado, New York, Oregon, West 
Virginia, Wisconsin. 
Poa pratensiformis Rydb. (P. pseudopratensis Scribn. & Rydb. not Beyer), Colorado, Wyo- 
ming. 
Poa pratensis L,., Alaska, California, Colorado, Connecticut, Delaware, Idaho, Indiana, 
Iowa, Kansas, Kentucky, Maine, Massachusetts, Michigan, Missouri, Montana, Ne- 
braska, New Mexico, New York, North Carolina, North Dakota, Ohio, Oregon, Penn- 
sylvania, South Dakota, Utah, Washington, Wisconsin; Ontario, Quebec. 
Poa reflexa Vasey & Scribn., Utah. 
Poa Vaseyochloa Scribn. (P. pulchella Vasey, not Salisb.), Washington. 
TYPE LOCALITY: Europe, on Tussilago Farfara: 
DISTRIBUTION: Almost throughout continental North America in the uredinial form, but the 
aecia and telia only in alpine and boreal stations, especially westward; also in Europe and Japan. 
ILLUSTRATIONS: McAlpine, Rusts Austr. ol. 3, f. 22; Krypt.-fl. Brand. Pilze 3: f. B176; Corda, 
Ic. Fung. 3: pl. 3, f. 45. 
Exsiccati: Barth. Fungi Columb. 2772, 2773, 3175, 3260, 3362, 3565, 3959, 4367, 4661, 4669; 
Barth. N. Am. Ured. 654, 761, 860, 957, 958, 1147, 1265, 1466, 1962, 2145, 2244; Brenckle, Fungi 
Dak. 291; Clements, Crypt. Form. Colo. 558, 573; Ellis & Ev. Fungi Columb. 1862, 1971; Garrett, 
Fungi Utah. 87, 103,104. | 
80. Dicaeoma abundans (Peck) Arthur & Fromme. 
Aecidium abundans Peck, Bot. Gaz. 3:34. 1878. 
Puccinia Crandalliiti Pammel & Hume; Hume, Proc. Davenport Acad. 7: 250. 1899. 
Puccinia Kreageri Ricker, Jour. Myc. 11: 114. 1905. 
Dicaeoma Crandallii Arth. Résult. Sci. Congr. Bot. Vienne 344. 1906. 
Puccinia abundans H. S. Jackson, Brooklyn Bot. Gard. Mem. 1: 229, 1918. 
O. Pycnia epiphyllous, numerous, gregarious, in small groups on discolored areas, light- 
yellow, inconspicuous, flask-shaped, 75-100 broad by 100-125 » high; ostiolar filaments 
40-60 » long. 
I. Aecia hypophyllous, gregarious, in crowded groups 2-4 mm. across, on discolored 
areas, cylindric, 0.3-0.4 mm. in diameter, about 0.5 mm. high; peridium whitish, the margin 
finely lacerate; peridial cells oblong or rhomboidal, 26~29 by 35-39 y, the walls conspicuously 
rugose, the outer 5-7 thick, the inner slightly thinner; aeciospores globoid or ellipsoid, 
18-26 by 21-33 w; wall colorless, moderately thick, 1.5-2 4, evenly and finely verrucose. 
On CapRIFOLIACEAE: ; 
Symphoricarpos albus (L.) Blake (S. racemosus Michx., S. pauciflorus Britton), California, 
Colorado, Idaho, Montana, Nebraska, Oregon, Washington, Wyoming; British Co- 
lumbia. 
Symphoricarpos occidentalis Hook., Colorado, Montana, North Dakota, Wyoming; Sas- 
katchewan. . ; 
Symphoricarpos orbiculatus Moench, Missouri, Oklahoma. : 
Symphoricarpos oreophilus A. Gray, Colorado, Idaho, Montana, Utah, Wyoming. _ 
Symphoricarpos Symphoricarpos (1,.) MacM. (S. vulgaris Michx.), Kansas, Missouri, Okla- 
homa. 
Symphoricar pos vaccinioides Rydb., Montana, Utah, Wyoming. 
Symphoricarpos sp., British Columbia. 
II. Uredinia hypophyllous, oval, 0.5-1 mm. long, soon naked, pulverulent, light chestnut- 
brown, ruptured epidermis conspicuous; urediniospores ellipsoid or obovoid, 23-27 by 29-35 py; 
wall light-yellow, moderately thick, 2-2.5 u, moderately and finely echinulate, the pores 6-8, 
scattered. 
Ill. Telia hypophyllous, numerous, crowded and often confluent, ovate or oblong, 0.5—- 
2 mm. long, pulvinate, dark-brown, early naked, ruptured epidermis noticeable; teliospores 
ellipsoid or occasionally cylindric, 15-24 by 35-50 wu, rounded or sometimes truncate above, 
moderately constricted at septum; wall cinnamon-brown at sides, darker above, 1.5-2.5 » 
thick, 5-12 « at apex; pedicel pale cinnamon-brown, firm, one to one and a half times length of 
spore. 
On PosckaE: . ; . . 
Festuca confinis Vasey (Poa Kingii S. Wats.), California, Colorado, Utah, Wyoming. 
Festuca idahoensis Elmer (F. ovina ingrata Hack., F. ingrata Rydb.), Colorado, Montana, 
Oregon, Wyoming. 
Festuca occidentalis Hook., Colorado. 
Festuca ovina L., North Dakota. 
