348 NORTH AMERICAN FLORA [VoLumME 7 
Eleocharis palustris (L.) R. & S. (E. glaucescens Willd., E. palustris glaucescens A. Gray), 
Indiana, Iowa, Kansas, Michigan, Nebraska, New York, Pennsylvania, Wisconsin; 
Ontario, Quebec. 
Eleocharis tenuis (Willd.) Schultes, Maine, Nebraska, New York, Oklahoma. 
Eleocharis sp., Texas, Virginia; Manitoba. 
Type Locality: Spirit Lake, Iowa, on Eleocharis intermedia. 
DISTRIBUTION: Maine and Quebec to Manitoba, southward east of the mounjains to the Gulf 
of Mexico, and in Cuba and Porto Rico, the aecia being known only from the northern United States 
and adjacent parts of Canada. 
Exsrceati: Barth. Fungi Columb. 2355, 2759, 4144, 4662; Barth. N. Am. Ured. 338, 840, 938, 
1043, 1238, 2241; Ellis, N. Am. Fungi 1419; Ellis & Ev. Fungi Columb. 1458, 1802, 2147, D. Griff. 
W. Am. Fungi 330; Shear, N. Y. Fungi 127; Sydow, Ured. 2023, 2414, 2516. 
108. Dicaeoma libertum (Kern) Arthur. 
Puccinia liberta Kern, Mycologia 11: 142. 1919. 
O and I. Pycnia and aecia unknown. 
II. Uredinia chiefly culmicolous, scattered, usually numerous, oval or oblong, 0.3-1.5 mm. 
long, sometimes longer by becoming confluent, tardily dehiscent by longitudianl slits, somewhat 
bullate, slightly pulverulent after dehiscence; urediniospores broadly ellipsoid or obovoid, 
sometimes more or less laterally compressed, 13-21 by 18-27 »; wall golden- or. cinnamon- 
brown, 1.5—2 » thick, moderately and finely echinulate, the pores 2, equatorial. 
III. Telia rare, only few seen, resembling uredinia in shape and size, darker in color, 
tardily dehiscent by longitudinal slits, compact; teliospores clavate-oblong or fusiform, 14-18 
by 40-50 uw, rounded or acuminate above, usually narrowed below; wall golden- or cinnamon- 
brown, often paler at apex, 1-1.5 » thick, thicker above, 4~7 », smooth; pedicel short, tinted. 
ON CYPERACEAE: 
Eleocharis cellulosa Torr., Porto Rico. 
Eleocharis flaccida (Reichenb.) Urban, Porto Rico. 
Eleocharis geniculata (L..) R. Br., Guatemala; Cuba; Porto Rico. 
Eleocharis montana (H.B.K.) R. & S., California. 
Eleocharis mutata (L.) R. &. S., Porto Rico. 
Eleocharis palustris (L.) R. & S., California. 
Eleocharis sp., Nicaragua. 
Type LocaLity: Granada, Nicaragua, on Eleocharis sp. 
DISTRIBUTION: West Indies and Central America, and in southern California. 
109. Dicaeoma incompositum (Kern) Arthur. 
Uredo incomposita Kern, Mycologia 11: 143. 1919. 
O and I. Pyenia and aecia unknown. 
II. Uredinia chiefly culmicolous, scattered or sometimes in more or less evident groups, 
oval or oblong, 0.4-1.5 mm. or more long, tardily dehiscent by longitudinal slits, somewhat 
bullate; urediniospores broadly ellipsoid or obovoid, often somewhat angular, 18-26 by 27- 
37 «4; wall golden- or cinnamon-brown, moderately echinulate, 1.5-2 thick, the pores 2, 
equatorial. 
Il. Telia not known. 
ON CYPERACEAE: 
Eleocharis geniculata (L,.) R. Br., Porto Rico. 
Eleocharis interstincta (Vahl) R. & S., Porto Rico. 
Eleocharis sp., Guatemala. 
TypH LOCALITY: Mayagiiez, Porto Rico, on Eleocharis interstincta. 
DistRiBuTION: Porto Rico and Guatemala. 
110. Dicaeoma Fuirenae (Cooke) Kuntze, Rev. Gen. 35: 468. 
1898. 
Puccinia Fuirenae Cooke, Grevillea 6: 137. 1878. 
O and I. Pyenia and aecia unknown. 
II. Uredinia hypophyllous, scattered, oval or somewhat lenticular, 0.3-1 mm. long, rather 
tardily naked, slightly pulverulent, dark chestnut-brown, ruptured epidermis noticeable; 
urediniospores ellipsoid or obovoid, 16-23 by 24-37 ; wall cinnamon-brown, 1.5-2 » thick, 
moderately and finely echinulate, the pores 3-4, equatorial. 
III. Telia hypophyllous, scattered, oval or oblong, 0.3-0.8 mm. long, rather soon naked, 
pulvinate, blackish-brown, ruptured epidermis noticeable; teliospores clavate, 15-18 by 55- 
