Part 5, 1920] AECIDIACEAE 367 
o 
On CICHORIACEAE: 
Adopogon virginicus (I,.) Kuntze (Cynthia virginica D. Don, Krigia amplexicaulis Nutt.), 
Illinois, Iowa, Wisconsin. 
Agoseris aspera Rydb., Colorado. 
Agoseris auvantiaca (Hook.) Greene (Troximon aurantiacum Hook.), Colorado. 
Agoseris glauca (Nutt.) Greene (Troximon glaucum Nutt.), Colorado. 
Agoseris gractlens (A. Gray) Greene, Colorado. 
Agoseris montana Osterhout, Colorado. 
A goseris sp., Montana. 
Crepis riparia A. Nelson, Montana, Nebraska. 
Crepis runcinata (James) ‘T. & G., Montana, Nebraska. 
Hieracium albiflorum Hook., British Columbia. 
Hieracium canadense Michx., Illinois. 
Hieracium columbianum Rydb., Minnesota. 
Hieracium gracile Hook., Montana. 
Hieracium paniculatum 1,., Pennsylvania. 
Hieracium scabrum Michx., Wisconsin. 
Lactuca canadensis L., Ulinois, Indiana, Iowa, Michigan, New York, South Dakota, Wis- 
consin. 
Laciuca floridana (1,.) Gaertn., Nebraska. 
Leactuca graminifolia Michx., Colorado. 
Laciuca hirsuta Muhl., New York. 
Lactuca ludoviciana (Nutt.) DC., Iowa, Nebraska. 
Lactuca pulchella (Pursh) DC. (Mulgedium pulchellum T. & G.), Colorado, Iowa, Nebraska, 
North Dakota, South Dakota. 
Lactuca sagittifolia Ell., Michigan. 
Lactuca sativa L,., Connecticut, Indiana, Wisconsin. 
Lactuca spicata (Lam.) Hitche., Wisconsin; British Columbia. 
Lactuca virosa L., Indiana, New York, North Dakéta. 
Lactuca sp., Idaho; Nova Scotia. 
Nabalus albus (1,.) Hook., Illinois, New York, Wisconsin. 
Nabalus crepidineus (Michx.) DC., Wisconsin. 
Nabalus trifoliolatus Cass., Virginia. 
Scorzonella borealis (Bong.) Greene, Alaska. 
II. Uredinia chiefly hypophyllous, scattered, oval or oblong, 0.4-0.6 mm. long, rather 
early naked, cinnamon-brown, pulverulent, ruptured epidermis noticeable; urediniospores 
ellipsoid or obovoid, 14-20 by 20-26 y; wall golden-brown, about 1.5 » thick, moderately echin- 
ulate, the pores 2, in the upper part of the spore. 
III. Telia hypophyllous, scattered, oval, oblong, or linear, 0.3-1.5 mm. or more long, 
early naked, pulvinate, conspicuous, blackish-brown, ruptured epidermis noticeable; telio- 
spores narrowly clavate or clavate-oblong, 15-22 by 32-59, rounded or truncate above, 
slightly or not constricted at septum; wall chestnut-brown, somewhat paler below, 1-1.5 z 
thick, much thicker at apex, 5-13, smooth; pedicel tinted next to spore, about three 
fourths length of spore. 
‘The species is morphologically similar to the two preceding species, D. Asterum and D. Peckii, 
but in general may be separated from both of them by the aecial hosts, from D. Asterum by the 
larger urediniospores, and from D. Peckii by the more elongate telia and broader teliospores with 
the lower cell narrower than the upper cell, giving a somewhat obovate or clavate appearance to the 
spore. No races have yet been detected. 
On CyPERACEAE: 
Carex aenea Fernald, Minnesota. 
Carex brunnescens (Pers.) Poir., British Columbia. 
Carex Frankii Kunth, Missouri. 
Carex grisea Wahl., Iowa. 
Carex Hoodit Boott, Utah. 
Carex illota I,. H. Bailey, Colorado. 
Carex lupulina Mubhl., Missouri. 
Carex olympica Mackenzie, Oregon. 
Carex praegracilis W. Boott (C. marcida Boott), Colorado, North Dakota, Oregon, South 
Dakota. 
Carex praticola Rydb. (C. pratensis Drejer), Colorado, Montana, Wyoming. 
Carex Raynoldsit Dewey, Wyoming. 
Carex Sartwellii Dewey, Michigan, Minnesota. : ; 
Carex siccata Dewey, Colorado, Iowa, Montana, Wisconsin. 
Carex sparganioides Muhl., New York. : 
Carex Sprengelii Dewey (C. longirostris Torr.), Minnesota. 
Carex sp., California, Indiana. . 
TypH Locality: Bethlehem, Pennsylvania, on Hieracium paniculatum. 
DisTRIBUTION: Nova Scotia and Virginia across the continent to southeastern Alaska and Utah, 
but most common on the plains of the upper Mississippi valley and in the eastern Rocky Mountains. 
Exsrccati: Barth. Fungi Columb. 3070, 3101, 3765, 3953, 3954, 4366, 4860; Barth. N. Am. Ured. 
702, 758, 954, 1065, 1066, 1165, 1264, 1961; Brenckle, Fungi Dak. 111, 111a, b, 242, 417; Clements, 
Crypt. Form. Colo. 31/4; Ellis & Ev. Fungi Columb. 1601, 1902; Ellis & Ev. N. Am. Fungi 2993, 
3054; D. Griff. W. Am. Fungi 277c, 339a, 3724; Seym. & Earle, Econ. Fungi 484; Sydow, Ured. 2323. 
