Part 4, 1920] AECIDIACEAER 325 
II. Uredinia chiefly epiphyllous, scattered, numerous, elliptic or oblong, small, 0.3~-0.8 mm. 
long, cinnamon-brown, rather tardily naked, ruptured epidermis noticeable; urediniospores 
broadly ellipsoid or ellipsoid, 15-18 by 19-24 uw; wall golden-yellow, moderately thin, 1-1.5 », 
finely and closely echinulate, the pores 6-8, scattered. 
III. Telia chiefly hypophyllous and caulicolous, oblong or linear, small, 0.3-0.8 mm. in 
length, blackish-brown, long covered by the epidermis, bordered by a layer of brownish stromal 
hyphae; teliospores germinating at maturity, clavate-oblong or cylindric, 13-21 by 32~48 n, 
truncate or rounded above, narrowed below, slightly or not constricted at septum; wall thin, 
about 1 uw, light chestnut-brown, darker and slightly thickened above, 3-5 y, smooth; pedicel 
short, dark like upper part of spore. 
On PoacEAE: 
Sphenopholis nitida (Spreng.) Scribn. (Eatonia Dudleyi Vasey, E. nitida N’ ash), Delaware, 
Mississippi, South Carolina, Virginia. 
Sphenopholis obtusata (Michx.) Scribn. (Eatonia obtusata A. Gray, E. pubescens Scribn. & 
Merr.), Florida, lowa, Kansas, Mississsippi, Nebraska, North Dakota, Oklahoma, South 
Dakota, Wisconsin. 
Sphenopholis pallens (Spreng.) Scribn. (Eatonia pennsylvanica A. Gray), Delaware, Indiana, 
Fahd Nebraska, New York, North Dakota, Ohio, South Dakota, West Virginia; 
ntario. 
TYPE LocaALIty: North Carolina, on Ranunculus abortivus. 
Disrrisution: Northern New York and Ontario to North Dakota, and southward to Florida 
and Oklahoma. 
Exsiccatr: Barth. Fungi Columb. 3653; Barth. N. Am. Ured. 434, 1042, 1648; Brenckle, Fungi 
Dak. 184, 443; Ellis & Ev. Fungi Columb. 2107; Ellis, N. Am. Fungi 1003); D. Griff. W. Am. Fungi 
278; Kellerm. Ohio Fungi 62; Rab.-Wint.-Paz. Fungi Eur. 3837; Seym. & Earle, Econ. Fungi 94, 
95; Sydow, Ured. 1222. 
75. Dicaéoma Koeleriae (Arth.) Arthur & Fromme. 
Puccinia Koeleriae Arth. Mycologia 1: 247. 1909. 
O. Pycnia chiefly epiphyllous, numerous, gregarious, in circular groups 0.5—3 mm. across, 
on discolored spots 1-7 mm. in diameter, punctiform, honey-yellow becoming brownish, 
flattened-globoid, 80-100 » broad by 45-65 yu high; ostiolar filaments 35-50 u» long. 
I. Aecia hypophyllous, numerous, in crowded circular groups 1-3 mm. or more across, 
on discolored spots 1-7 mm. in diameter, short-cylindric, 0.4-1 mm. high by 0.2~0.3 mm. in 
diameter; peridium colorless, somewhat evanescent; peridial cells rhomboidal, 16-26 » by 
16-35 yp, overlapping, the outer wall rather thick, 7-13 », smooth, transversely striate, the inner 
wall moderately thin, 3-4 uw, verrucose; aeciospores globoid, 16-23 by 18-26 u; wall colorless, 
uniformly thin, 1-2 u, evenly and finely verrucose. 
On BERBERIDACEAE' . 
Mahonia Aquifolium (Pursh) Nutt. (Berberis Aquifolium Pursh, B. repens Lindl., B. nana 
Greene, Odostemon Aquifolium Rydb.), Colorado, Idaho, Montana, Oregon; British 
Columbia. 
Meahonia diversifolia Sweet (Berberis Aquifolium Lindl., Odostemon nutkanus Rydb.), 
Idaho, Oregon; British Columbia. . ; 
Mahonia nervosa (Pursh) Nutt. (Berberis nervosa Pursh), British Columbia. 
Il. Uredinia amphigenous, in small groups, oblong or linear, 0.5-1.5 mm. long, soon 
naked, pulverulent, cinnamon-brown, ruptured epidermis conspicuous; paraphyses numerous, 
intermixed, capitate or clavate-capitate, 10-19 by 42-100 nu, the wall smooth, 1.5-4 » thick, 
pale golden-yellow or colorless; urediniospores ellipsoid, 19-26 by 23-32 u; wall cinnamon- 
brown, thin, 1-1.5 u, finely and closely or moderately verrucose-echinulate, the pores 8-10, 
scattered. 
Ill. Telia hypophyllous, scattered, sometimes confluent, oblong or linear, 0.5-1.5 mm. 
in length, long covered by the epidermis, bordered by a thin stroma, grayish-black; teliospores 
clavate or oblong-clavate, 13-21 by 45-64, obtuse or truncate above, narrowed below, 
slightly or not constricted at septtum; wall chestnut-brown, paler near the base, thin, about 
1 yu, slightly thickened at apex, 3-5 u, smooth; pedicel short, at the attachment colored like 
apex, paler below. 
ON POACEAE: : 
Koeleria cristata (I,.) Pers. (K. gracilis Pers.), Colorado, Montana, New Mexico, North 
Dakota, ee oe ae el 
Type Locatity: Ouray, Colorado, on Koelerta cristata. : . 
DISTRIBUTION: Western North Dakota to British Columbia, and southward to New Mexico. 
Exsiccatt: Barth. Fungi Columb. 3068; Barth. N. Am. Ured. 1853. 
