Part 5, 1920] AECIDIACEAE 355 
126. Dicaeoma Parnassiae (Schlecht.) Arthur & Kern. 
Caeoma Parnassiae Schlecht. Fl. Berol. 2: 113. 1824. 
Caeoma parnassiatum Link, in Willd. Sp. Pl. 67: 67. 1825, 
Uredo Parnassiae Spreng. Syst. Veg. 4: 571. 1827. 
Aecidium Parnassiae Graves; Duby, Bot. Gall. 904. 1830. 
Puccinia uliginosa Juel, Oefv. Sv. Vet.-Akad. Férh. 51: 409. 1894. 
Dicaeoma uliginosa Kuntze, Rev. Gen. 33: 471, 1898. 
O. Pycnia unknown. 
I. Aecia hypophyllous or caulicolous, in smal! groups 3-4 mm. in diameter, cupulate, 
0.2-0.3 mm. in diameter; peridium yellowish, the margin somewhat recurved, erose; peridial 
cells rhomboidal in side view, 16-26 by 20-30 n, slightly overlapping, the outer wall 5~7 u 
thick, striate, the inner wall 3~4 », closely verrucose 3 aeciospores irregularly globoid, 15-18 
by 16-19 u; wall colorless, thin, 1~1.5 », finely and closely verrucose. 
ON PARNASSIACEAE: 
Parnassia palustris L., Alaska. 
II. Uredinia amphigenous, scattered, oval or oblong, small, 0.1-0.3 mm, long, early naked, 
pulverulent, dark cinnamon-brown, ruptured epidermis evident; urediniospores obovoid or 
ellipsoid, 16-21 by 21-28 u; wall dark cinnamon- or light chestnut-brown, 1.5 u thick, moder- 
ately echinulate, the pores usually 3, sometimes 4, equatorial. 
III. Telia mostly hypophyllous, scattered, oblong, 0.1-1 mm. long, early naked, compact, 
chestnut-brown, ruptured epidermis evident; teliospores ellipsoid or clavate, 15-21 by 32-45 y, 
rounded above, narrowed below, somewhat constricted at septum; wall dark cinnamon- or 
chestnut-brown, thin, 1-2», thickened at apex, 3-9 u, smooth; pedicel light golden-brown, 
about half length of spore. 
On CYPERACEAE: 
Carex spp., not yet found in America. 
TYPE LOCALITY: Berlin, Germany, on Parnassia palustris. 
DistrreutTion: Kodiak island, Alaska; also in Europe. 
127. Dicaeoma eminens (Kern) Arthur & Kern. 
Puccinia eminens Kern, Mycologia 9: 220. 1917. 
O and I. Pyenia and aecia unknown. 
II. Uredinia not seen; urediniospores broadly ellipsoid or obovoid, 15-21 by 23-32 u; 
wall cinnamon-brown, about 1.5 » thick, evenly and rather sparsely echinulate, the pores 3, 
equatorial. 
III. Telia hypophyllous, scattered, roundish or oval, 0.4-1 mm. long, early naked, pul- 
vinate, chocolate-brown, ruptured epidermis noticeable; teliospores broadly clavate, 13-24 
by 45-67 yp, slightly constricted at septum, rounded or more often narrowed above, narrowed 
below; wall chestnut-brown, 1.5-2 » thick, very much thicker above, 7-16 », smooth; pedicel 
colorless, as long as spore or less. 
On CYPERACEAE: 
Carex durifolia L.. H. Bailey (C. Backii Boott), Manitoba. 
Carex saximontana Mackenzie (C. durifolia subrosirata Bates), Colorado, Nebraska. 
Type LocaLity: Colorado, on Carex saximontana. 
DISTRIBUTION: From Lake Winnipeg southward through western Nebraska to the foothills of 
Colorado. 
128. Dicaeoma Grossulariae (Schum.) Kern, Trans. Am. Micr. 
Soc. 32:64. 1913. 
Aecidium rubellum B Grossulariae Pers. in J. F. Gmet. Syst. Nat. 2?: 1473; byponym. 1791. 
Aecidium Rumicis 8 Grossulariae Pers. Syn. Fung. 207. 1801. 
Aecidium Grossulariae Schum. Enum. Pl. Saell. 2: 223. 1803. 
Caeomea grossulariatum Link, in Willd. Sp. Pl. 6#:59. 1825. 
Puccinia Pringsheimiana Kleb. Zeits. Pflanzenkr. 4: 194. 1894. 
Puccinia Grossulariae Lagerh. Tromsé Mus. Aarsh. 17: 60. 1895. 
Puccinia Magnusii Kleb. Zeits. Pilanzenkr. 5:79. 1895. 
Puccinia Ribis-nigri-acutae Kleb. Zeits. Pflanzenkr. 6:327. 1896. 
Puccinia Ribesii-Pseudocyperi Kleb. Jahrb. Wiss. Bot. 34: 391. 1899. 
Puccinia Ribis-nigri-paniculatae Kleb. Jahrb. Wiss. Bot. 34: 393. 1899. 
Puccinia albiperidia Arth. Jour. Myc. 8:53. 1902. 
Aecidium albiperidium Arth. Jour. Myc. 8:53. 1902. 
Puccinia riparia Holway, Jour. Myc. 10: 163. 1904. 
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