288 NORTH AMERICAN FLORA [VoLUME 7 
20. Dicaeoma tubulosum (Pat. & Gaill.) Arthur & Fromme. 
Aecidium tubulosum Pat. & Gaill. Bull. Soc. Myc. Fr. 4:97. 1888. 
Aecidium Uleanum Paz. Hedwigia 31:95. 1892. 
Uredo paspalicola P. Henn. Hedwigia 44: 57. 1905. 
Aecidium solaniphilum Speg. Anal. Mus. Nac. Buenos Aires 23:34. 1912. 
Uredo Stevensiana Arth. Mycologia 7: 326. 1915. 
Puccinia tubulosa Arth. Am. Jour. Bot. 5: 464. 1918. 
O. Pycnia epiphyllous, crowded upon yellowish areas opposite the aecia, conspicuous, 
dark-brown, globoid or broadly ellipsoid, 112-144 4 broad by 112-1604 high; ostiolar fila- 
ments slightly projecting, 40-90 » long. 
I. Aecia hypophyllous, crowded upon yellowish areas 1-2 cm. across, cylindric, 0.3- 
0.5 mm. in diameter, i-1.5 mm. high; peridium whitish, lacerate, fragile, upper portion soon 
breaking away; peridial cells broadly oblong or rhomboidal in radial section, 23-35 by 32-45 p, 
slightly overlapping, the outer wall 3-5 » thick, transversely striate, the inner wall 3-6 u 
thick, closely and coarsely verrucose; aeciospores irregularly ellipsoid or oblong, 19-26 by 24- 
34 yw; wall colorless or slightly brownish, 1-1.5 uw thick, closely and finely verrucose. 
On SOLANACEAE: 
Solanum tequilense A. Gray, Jalisco. 
Solanum torvum Sw., Guatemala; Costa Rica; Cuba; Jamaica; Porto Rico. 
II. Uredinia amphigenous, scattered or in small groups on discolored spots, elliptic, small, 
0.2-0.8 mm. long, brownish-yellow, rather tardily naked by a longitudinal rupture; paraphyses 
hyphoid, sometimes few or absent, erect or incurved, clavate, 10-15 by 29-50 y, the wall 
colorless, thin, about 1», frequently thicker above or on convex side, 2-4 4; urediniospores 
ellipsoid or obovoid, 15—27 by 20-32 u; wall usually pale-yellow or colorless, sometimes cin- 
namon-brown, thin, 1-1.5 4, closely and moderately echinulate, the pores 3 or 4, equatorial, 
usually indistinct. 
III. Telia amphigenous, scattered, rather scarce, round or oblong, small, 0.2-0.6 mm. 
across, early naked, chocolate-brown, pulverulent, ruptured epidermis somewhat inconspic- 
uous; teliospores elongate-obovoid or ellipsoid, 18-26 by 32-50 w; wall chestnut- or cinnamon- 
brown, thin, 1-1.5 4, thickened and usually darker colored at apex, 4-7 u, smooth; pedicel 
tinted, short, about one half length of spore or less. 
On POACEAE: 
Axonopus compressus (Sw.) Beauv. (Paspalum compressum Rasp., Anastrophus compressus 
Schlecht.), Guatemala; Porto Rico. 
Paspalum conjugatum Berg., Guatemala; Panama; Cuba; Porto Rico. 
Paspalum Humboldtianum Fliigge, Morelos; Guatemala. 
Paspalum paniculatum L., Guatemala; Costa Rica; Porto Rico. 
Paspalum plicatulum Michx., Cuba; Porto Rico. 
Syntherisma digitata Hitchce. (Digitaria setosa Desv.), Porto Rico. 
Syntherisma sanguinalis (L.) Dulac (S. marginata Nash, Panicum sanguinale I,.), Texas; 
Panama; Cuba. 
Valota insularis (L.) Chase (Andropogon insularis L,., Panicum leucophaeum H.B.K.), Cuba; 
Porto Rico. 
Tyre Locality: Mapire, Venezuela, on Solanum [torvum?]. 
DIsTRIBUTION: Texas to Central America and the West Indies; also in South America and 
Asia. 
Exsiccatr: Barth. Fungi Columb. 4202; Pringle, Mex. Fungi 6. 
21. Dicaeoma Chaetochloae (Arth.) Arthur & Fromme. 
Uredo Chaetochloae Arth. Bull. Torrey Club 33: 518. 1906. 
Puccinia Chaetochloae Arth. Bull. Torrey Club 34: 585. 1907. 
O and I. Pyenia and aecia unknown. 
II. Uredinia amphigenous, oblong or linear-oblong, about 0.1 mm. wide, 0.5-2 mm. or 
more long, somewhat tardily dehiscent by a longitudinal rupture, dark cinnamon-brown, 
pulverulent, ruptured epidermis conspicuous; urediniospores broadly and angularly ellipsoid 
or ellipsoid-oblong, 21-29 by 29-45 u; wall cinnamon-brown, 1.5-2 4 thick, moderately or 
sparsely and conspicuously echinulate with slightly elongate markings, the pores 3 or 4, 
approximately equatorial. 
III. Telia amphigenous, few, scattered, oblong or linear-oblong, 0.5-1. mm. across, tardily 
naked by a longitudinal slit, pulverulent, chocolate-brown, ruptured epidermis conspicuous; 
