366 NORTH AMERICAN FLORA [VoLuME 7 
Meriolix serrulata (Nutt.) Walp. (Oenothera serrulata Nutt.), Iowa, Nebraska, North 
Dakota, South Dakota. 
Oenothera biennis I. (Onagra biennis Scop.), Illinois, Indiana, Iowa, Michigan, Nebraska, 
New Hampshire, New York, Ohio, Pennsylvania, West Virginia, Wisconsin; Manitoba. 
Oenothera Hookeri T. & G., Arizona, California. : 
Oenothera strigosa (Rydb.) Mackenzie & Bush, Colorado. Idaho, Kansas, Minnesota, Ne- 
braska, North Dakota, South Dakota. 
Oenothera sp., Oklahoma, Virginia. 
Pachylophus microglottis ydb., Colorado. 
Raimannia laciniata (Hill) Rose (Ocenothera laciniata Hill), Alabama, Kansas, Nebraska. 
Raimannia rhombipetala (Nutt.) Rose (Oenothera rhombipetala Nutt.), Nebraska. 
II. Uredinia hypophyllous, scattered, oval or oblong, 0.1-0.2 mm. wide by 0.3-0.8 mm. 
long, early naked, somewhat pulverulent, light cinnamon-brown, ruptured epidermis notice- 
able; urediniospores broadly ellipsoid or obovate, 13-19 by 21-26 u; wall golden-brown, thin, 
1-1.5 yu, finely echinulate, the pores 2, in the upper part. 
III. Telia hypophyllous, scattered, roundish or oval, 0.2-0.5 mm. wide by 0.3-1 mm. or 
more long, soon naked, pulvinate, dark chocolate-brown, ruptured epidermis conspicuous; 
teliospores clavate-oblong, 13-19 by 32-55 yu, rounded or truncate above, usually narrowed at 
base, slightly constricted at septum; wall chestnut-brown, paler below, rather thin, about 
1.5 yu, thicker at apex, 7-11 4, smooth; pedicel one half to once length of spore, nearly colorless. 
‘The species is morphologically similar to D. Asterum and D. hieraciatum, but in general may be 
separated from both of them by the aecial hosts, from D. Asterum by the larger urediniospores, and 
from D, hieraciatum by the more roundish telia and narrower teliospores with the lower cell similar 
in shape to the upper cell. No races have yet been detected. 
On CYPERACEAE: 
Carex Asa-Grayi \,. H. Bailey (C. Grayi Carey), Missouri. 
Carex chordorrhiza Ehrh., Ontario. 
Carex flexuosa Muhl., Maine. 
Carex lacustris Willd., Maine. 
Carex laeviconica Dewey, Indiana, Missouri. 
Carex lanuginosa Michx., Indiana, Kansas, Nebraska, North Dakota, Ohio. 
Carex Muhlenbergit Schkuhr, Wisconsin. 
Carex occidentalis L,. H. Bailey, Colorado. 
Carex retrorsa Schw., New York. 
Carex rostrata Stokes (C. utriculata Boott), Maine, Michigan, Vermont. 
Carex scabrata Schw., Pennsylvania. 
Carex siccata Dewey, North Dakota, Vermont. 
Carex sparganioides Muhl., Indiana, Kansas, Wisconsin. 
Carex trichocarpa Muhl., Illinois, Indiana, lowa, New York, Ohio, Virginia, Wisconsin. 
Carex tumulicola Mackenzie, Oregon. 
Carex Willdenovit Schkuhr, Indiana, New York. 
Carex sp., California; Manitoba. 
Type LocaLrry: Knowersville, New York, on Oenothera biennis. 
DISTRIBUTION: Maine to Virginia and Alabama, westward to the Pacific coast; especially 
abundant from Ohio to South Dakota and Kansas, and rare on the Pacific slope. On Carex tricho- 
carpe often associated, even on the same leaf, with Dicaeoma Sambuci. . 
Exsiccati: Barth. Fungi Columb. 2569, 2570, 3460, 3563, 3669, 3850, 3955, 3956, 4157; Barth. 
N. Am. Ured. 47, 53, 252, 560, 652, 739, 955, 1058, 1361, 1563, 1933; Brenckle, Fungi Dak. 65, 65a, 
112, 186; Carleton, Ured. Am. 5; Ellis, N. Am. Fungi 1016; Ellis & Ev. Fungi Columb. 195, 654, 1191, 
1604, 1651 (in part), 1907, 1954; Ellis & Ev. N. Am. Fungi 3243; Kellerm. Ohio Fungi 17, 28 (in 
part), 194 (in part); Sydow, Ured. 1176, 1576 (in part), 2325; Thiimen, Myc. Univ. 1035. 
137. Dicaeoma hieraciatum (Schw.) Arthur & Kern. 
Caeoma (Aecidium) hieraciatum Schw. Trans. Am. Phil. Soc. IT. 4: 292. 1832. 
Aecidium (Caeoma) hieraciatum Schw. Trans. Am. Phil. Soc. II. 4: 309. 1832. 
Aecidium compositarum Lactucae Burrill; De-Toni, in Sace. Syll. Fung. 7: 799. 1888. 
Puccinia Opiztt Arth. Jour. Myc. 13: 194. Not P. Opizii Bubak, 1902. 
Puccinia patruelis Arth. Mycologia 1: 245. 1909. 
Dicaeoma patruelis H. 8. Jackson, Proc. Ind. Acad. Sci. 1915: 455. 1916. 
Puccinia hieraciata H. S. Jackson, Brooklyn Bot. Gard. Mem. 1: 251. 1918. 
O. Pyecnia amphigenous, gregarious, the groups sometimes up to 5 mm. across, golden- 
yellow becoming reddish-brown, globoid, 85-125 » in diameter; ostiolar filaments 30-60 u long. 
I. Aecia amphigenous or chiefly hypophyllous, in annular or crowded groups 1-7 mm. or 
more across which are sometimes adjacent and confluent over considerable areas, cupulate, 
short, 0.2-0.3 mm. in diameter; peridium colorless, the margin somewhat recurved, finely 
lacerate; peridial cells rhomboidal, 18-27 » long, the outer wall 5-7 p thick, striate, the inner 
wall thinner, 3-5 », finely verrucose; aeciospores globoid, 13-20 by 16-23 4; wall colorless, 
thin, 1 w, very finely verrucose. 
