Part 7, 1922] AECIDIACEAE 539 
ae peal Link, in Willd. Sp. Pl. 62:80. 1825. 
uccinia granulata DeBary; Klotzsch, Herb. Viv. Myc. ed. 2. 499. 1857; Bot. Zei ‘ 2 
Puccinia pulchella Peck, Bull. Buffalo Soc. Nat. Sci. 1: 66. 1873 ONG ore Sng 
Puccinia Ribis papillifera Lagerh. Hedwigia 28:107. 1889. 
Dicaeoma pulchellum Kuntze, Rev.-Gen. 33: 470. 1898. 
Dasyspora Ribis Arth. Résult. Sci. Congr. Bot. Vienne 347. 1906. 
O. Pyenia unknown. 
III. Telia mostly epiphyllous, circinating on yellowish or reddish spots 2-3 mm. in diame- 
ter, round or oblong, 0.3-0.8 mm. across, rather early naked, pulverulent, dark chestnut- 
brown, ruptured epidermis evident; teliospores oblong or narrowly ellipsoid, 13-19 by 26-35 y, 
rounded at both ends, not or slightly constricted at septum; wall dark cinnamon-brown, 
rather thick, 1.5-2.5 u, thickened into a low semi-hyaline umbo over the pores, 3-5 yu, closely 
and noticeably verrucose, the pore of upper cell apical, of lower cell usually near pedicel; pedicel 
colorless, fragile, short. 
ON GROSSULARIACEAE: 
Ribes glandulosum Grauer (R. prostratum L’Hér.), Maine, New York, Vermont, Wisconsin, 
Ribes rubrum I,., Michigan, Minnesota, Wisconsin. 
Ribes triste Pall., Maine. 
Ribes vulgare Lam., Minnesota. 
—~ LOCALITY: France, on red currant [Ribes rubrum]. 
; i etrcteama aS Northern border of the United States from Maine westward to Minnesota; also 
in Europe. ; 
InLustrations: Beitr. Krypt. Schweiz 2?: f. 112; Corda, Ic. Fung. 4: pl. 5, f. 60; Holway, 
N. Am. Ured. 1: pl. 22, f. 79a, pl. 23, f.79b, c; Ber. Deuts. Bot. Ges. 9: pl. 3, f. 16; Grove, Brit. 
Rust Fungi f. 159. 
Exsiccati: Barth. Fungi Columb. 2674; Barth. N. Am. Ured. 363; Thiim. Myc. Univ. 544. 
40. Micropuccinia Parkerae (Dietel & Holway) 
Arthur & Jackson. 
Puccinia Parkerae Dietel & Holway; Dietel, Erythea 3:78. 1895. 
O. Pycnia not known. 
III. Telia hypophyllous and petiolicolous, crowded in groups 2-6 mm. in diameter oppo- 
site reddish spots, ofteh causing distention of leaf in infected areas, round or oblong, large, 
0.5-3 mm. long, rather early naked, pulvinate, brownish-black, ruptured epidermis conspicu- 
ous; teliospores oblong or clavate-oblong, 13-16 by 32-53 uw, rounded or oblique above, nar- 
towed below, constricted at septum; wall chestnut-brown above, lighter below, 1.5—2 » thick, 
thickened at apex, 5-12 4, smooth; pedicel colorless, up to twice length of spore. 
This species is correlated with Dicaeoma Grossulariae (Schum.) Kern, the telial characters 
of the two species being similar or identical, and the host of the short-cycled form corre- 
sponding with the aecial hosts of the heteroecious form. This agreement doubtless indicates 
a common origin for the two species. 
On GROSSULARIACEAE: 
Ribes lacustve (Pers.) Poir. (Limnobotrya lacustris Rydb.), Oregon, Washington; British 
Columbia. , 
TYPE LOCALITY: Seattle, Washington, on Ribes lacustre. 
DISTRIBUTION: Oregon northward into British Columbia. 
ILLUSTRATION: Holway, N. Am. Ured. 1: pl. 22, f. 78. 
ExsiccaTi: Barth. N. Am. Ured. 52; Ellis & Ev. Fungi Columb. 753; Ellis & Ev. N. Am. 
Fungi 3242. 
41. Micropuccinia Sieversiae (Arth.) Arthur & Jackson. 
Puccinia Sieversiae Arth. Bull. Torrey Club 31:3. 1904. 
O. Pycnia unknown. 
III. Telia mostly hypophyllous, scattered, round or oblong, 0.3-1 mm. across, somewhat 
tardily naked, bullate, pulverulent, chestnut-brown, ruptured epidermis conspicuous; telio- 
spores ellipsoid or ellipsoid-oblong, 16-22 by 30-39», rounded above and below, not con- 
stricted at septum; wall cinnamon-brown, 1.5-2.5 4 thick, thickened at apex into a low, 
semi-hyaline umbo, 4-6 u, rather obscurely rugose; pedicel colorless, short, fragile. 
ON Rosaceak: 
Acomastylis turbinata (Rydb.) Greene (Geum turbinatum Rydb., Sieversia turbinata Greene), 
Colorado, Utah. : . . . 
TypE LocaLity: Fish Lake, Uintah Mountains., Utah, on Sieversia turbinata. 
DisrrRisution: Northwestern Utah and adjacent Colorado. 
ILLUSTRATION: Holway, N. Am. Ured. 1: pl. 23, f. 81a, b. 
