542 NORTH AMERICAN FLORA [VoLumE 7 
This species is correlated with Dicaeoma Rhamni (Pers.) Kuntze, the telial characters 
of the two species being very similar, and the hosts of the short-cycled form corresponding 
with the aecial hosts of the heteroecious form. This agreement doubtless indicates 2 common 
origin for the two species. 
On RHAMNACEAE: 
Rhamnus californica Eschsch., California. 
Rhamnus crocea Nutt. (R. insularis Greene), California. 
Rhamnus crocea illicifolia (Kellogg) Greene, California. 
TYPE LocaLity: Coimbra, Portugal, on Rhamnus Alaternus. 
DistRipurion: California; also in Europe. 
: Prey iy ia Bull. Lab. Nat. Hist. Univ. Iowa 3: ol. 2, f. 13; Holway, N. Am. Ured. 
Exsiccati: Arth. & Holway, Ured. Exs. Ic. 13a, b; Barth. Fungi Columb. 4970; Barth. N. 
Am. Ured. 1660, 2455; Ellis, N. Am. Fungi 1466; Sydow, Ured. 1375. 
47. Micropuccinia Triumfettae (Dietel & Holway) 
Arthur & Jackson. 
Puccinia Triumfettae Dietel & Holway; Holway, Bot. Gaz. 24:30. 1897. 
O. Pyenia unknown. 
III. Telia mostly hypophyllous, loosely grouped upon yellowish spots 1-10 mm. across, 
round, 0.1-0.5 mm. in diameter, early naked, pulvinate, golden- or chocolate-brown becoming 
«cinereous from germination, ruptured epidermis inconspicuous; teliospores ellipsoid, oblong, 
“or obovoid, 15-18 by 25-36 u, rounded above, rounded or narrowed below, slightly constricted 
at septum; wall light golden-brown, rather thick, 1.5-2.5 u, thickened at apex, 3-7 », smooth; 
:pedicel colorless, up to three times spore-length. 
On TILIACEAE: 
Triumfetta semitriloba Jacq., Morelos. 
TYPE Locality: Cuernavaca, Mexico, on Triumfetta semitriloba. 
DIstRIBuTION: Southern Mexico; also in South America. 
ILLUSTRATION: Holway, N. Am. Ured. 1: 1. 26, f. 95. 
48. Micropuccinia Malvacearum (Bertero) Arth. & Jackson; 
Arth. Bull. Torrey Club 48: 41. 1921. 
Puccinia Malvacearum Bertero; Mont. in C. Gay, Fl. Chil. 8:43. 1852. 
Dicaeoma Malvacearum Kuntze, Rev. Gen. 33: 469. 1898. 
Leptopuccinia Malvacearum Rostr. Plantep. Haandb. 268. 1902. 
Dasyspora Malvacearum Arth. Résult. Sci. Congr. Bot. Vienne 347. 1906. 
O. Pycnia unknown. 
III. Telia hypophyllous and caulicolous, round, 0.2-1.5 mm. across, scattered over large 
areas, pulvinate, compact, early naked, at first yellowish-brown, later light chestnut-brown, be- 
coming cinereous by germination, ruptured epidermis not conspicuous except about caulicolous 
sori; teliospores fusiform or oblong-fusiform, 16-26 by 40-70 nu, acute or obtuse at apex, usually 
much narrowed below, slightly or not constricted at septum; wall variable in thickness, 
1.5-4 », smooth, ciunamon-brown, somewhat thickened at apex, 5-104; pedicel once and a 
half to twice length of spore, colorless, firm, persistent. 
On MALVACEAE: 
Althaea ficifolia (1,.) Cav., Colorado, New York, Oregon; Ontario. 
Althaea rosea (L.) Cav., California, Colorado, Delaware, Illinois, Indiana, Maine, Massa- 
chusetts, Michigan, Mississippi, New Hampshire, New Jersey, New York, Ohio, Ore- 
gon, Pennsylvania, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin; 
Ontario. 
Lavatera arborea L., California. 
Lavatera assurgentifiora Kellogg, Califdrnia. 
Lavatera cretica I. (L. sylvestris Brot.), California. 
Lavatera maritima Gouan, California. 
Lavatera plebeia Sims, California. 
Malva borealis Wallm., California. 
Malva moschatea I,., California; Ontario. 
Maiva oxyloba Boiss., California. 
Malva parviflora I,., California. 
Malva rotundifolia L., Colorado, Connecticut, Delaware, Indiana, Michigan, New Jersey, 
New York, Oregon, Pennsylvania, Utah, Virginia, Washington, West Virginia, Wis- 
consin; Ontario. 
Malva sylvestris I,., California, Colorado, Oregon, West Virginia. 
Malva verticillata L. (M. crispa I,.), California. 
