290 NORTH AMERICAN FLORA [VoLUME 7 
Paspalum floridanum Michx., Texas. 
Paspalum setaceum Michx., Kansas, Nebraska. 
Paspalum stramineum Nash, Nebraska. 
TypP# LOCALITY: Rooks County, Kansas, on Paspalum setaceum. 
DistriputTion: Nebraska southward to Florida, Central America, and the West Indies. 
ILLUSTRATION: Bull. Lab. Nat. Hist. Univ. Iowa 5: ol. 4, f. 42a. 
Exsiccati: Arth. & Holway, Ured. Exs. Ic. 42a; Barth. Fungi Columb. 4673; Barth. N. Am. 
Ured. 2167; Ellis & Ev.N. Am. Fungi 3577; Ellis & Ev. Fungi Columb. 1186; Sydow, Ured. 1080. 
24. Dicaeoma impositum (Arth.) Arthur & Fromme. 
oe Sha Dietel; Atk. Bull. Cornell Univ. 3:22. 1897. Not Dicaeoma Muhlenbergiae 
rth. . 
Puccinia imposita Arth. Bull. Torrey Club 46: 112. 1919. 
O and I. Pycnia and aecia unknown. 
II. Uredinia amphigenous, scattered or loosely grouped in brownish or purplish-brown 
spots, elliptic or oblong, 0.2-0.4 mm. wide by 0.4-1 mm. long, early or somewhat tardily naked, 
pulverulent, golden- or light cinnamon-brown, ruptured epidermis conspicuous; uredinio- 
spores globoid or broadly ellipsoid, 23-32 by 27-35 4; wall cimnamon-brown, rather thick, 
1.5—2.5 y, closely and finely echinulate, the pores prominent, equatorial, 3 or 4, covered with 
swollen, hyaline cuticle. 
Ill. Telia amphigenous, disposed similarly to the uredinia, elliptic or oblong, 0.4-1 mm. 
long, early or somewhat tardily naked, pulverulent, dark cinnamon- or chestnut-brown, 
ruptured epidermis conspicuous; teliospores oblong or clavate, 18-26 by 37-48 », rounded at 
both ends or slightly narrowed below, usually not constricted at septum; wall dark chestnut- 
brown above, lighter below, 1.5—2.5 uw thick, thickened 6-8 u at apex, sometimes also thickened 
at one side; pedicel golden-brown, short. 
On Poacka#: 
Leptoloma cognatum (Schultes) Chase (Panicum cognatum Schultes, P. autumnale Bosc), 
Alabama, Kansas, Oklahoma, Texas. 
Type Locatity: Auburn, Lee County, Alabama, on “‘ Muhlenbergia diffusa,” error for Lepto- 
loma cognatum. 
DistRIBUTION: Gulf States north to Kansas. 
25. Dicaeoma emaculatum (Schw.) Kuntze, Rev. Gen. 33: 468. 
1898. 
Puccinia emaculata Schw. Trans. Am. Phil. Soc. IT, 4: 295. 1832. 
Puccinia graminis brevicarpa Peck, Ann. Rep. N. Y¥. State Mus. 25: 122. 1873. 
Uredo sphaerospora Berk. & Curt.; Cooke, Grevillea 20: 110, hyponym. 1892. 
O and I. Pycnia and aecia unknown. 
II. Uredinia chiefly epiphyllous, scattered, small, elliptic, 0.3-0.5 mm. long, early naked, 
pulverulent, cinnamon-brown, ruptured epidermis conspicuous; urediniospores globoid or 
broadly ellipsoid, 18-23 by 19-26 y; wall moderately thin, 1.5-2 u, cinnamon-brown, finely and 
closely echinulate, the pores usually 3, sometimes 4, approximately equatorial. 
III. Telia chiefly epiphyllous, scattered or sometimes crowded, conspicuous, elliptic or 
oblong, 0.5-3 mm. long, early naked, compact, pulvinate, chocolate-brown, muptured epi- 
dermis disappearing; teliospores ellipsoid or oblong, 16-23 by 29-48 yw, rounded, tapering or 
truncate above, somewhat narrowed below, only slightly constricted at septum; wall dark 
chestnut-brown, smooth, 1.5-2 » thick, much thicker above, 7-104; pedicel golden-brown, 
one and a half times length of spore or less. 
On POACEAE: 
Panicum capillare L., Delaware, Illinois, Indiana, Iowa, Kansas, Kentucky, Michigan, 
Minnesota, Mississippi, Missouri, Nebraska, New Jersey, New York, Ohio, Oklahoma, 
Pennsylvania, Rhode Island, South Dakota, Tennessee, Virginia, West Virginia, Wis- 
consin; Ontario. 
Panicum condensum Nash, Texas. 
Panicum flexile (Gatt.) Scribn., Indiana. 
Panicum miliaceum I,., Indiana. F 
Panicum philadelphicum Bernh., New Hampshire. 
Paspalum stramineum Nash, Oklahoma. . ; 
Type LocaLiry: Bartram Gardens, Philadelphia, Pennsylvania, on ‘‘Panicum pubescens,” 
error for P. capillare. ; 
DistRrsuTion: New York and Ontario to South Dakota, and southward to the Gulf of Mexico. 
