582 NORTH AMERICAN FLORA [VoLUME 7 
Ximenesia encelioides (Benth. & Hook.) Cav. (Verbesina encelioides Benth. & Hook.), 
Coahuila. 
Zinnia tenuiflora Jacq.,, Jalisco. 
TYPE LOCALITY: Cuernavaca, Mexico, on Melampodium [divaricatum]. 
Disrrisution: Central Texas to Panama and through the West Indies; also in South America. 
ILLUSTRATIONS: Sydow, Mong. Ured. 1: i. 7, f. 101; pl. 9, f. 139. 
Exsiccart: Sydow, Ured. 376, 1534. 
139. Micropuccinia Flaveriae (H. S. Jackson) Arthur & Jackson. 
Puccinia Flaveriae H. S. Jackson, Mycologia 14: 117. 1922. 
O. Pycnia unknown, probably not formed. 
III. Telia amphigenous or caulicolous, gregarious on discolored spots, or extending for 
considerable distances on stems, round, small, 0.2-0.5 mm. in diameter, tardily naked, chestnut- 
brown, pulvinate, the caulicolous sori long covered by the cinereous epidermis, ruptured 
epidermis of foliicolous sori conspicuous; teliospores irregularly ellipsoid, clavate, or cylindric, 
15-19 by 32-50 u, often bent to one side, rounded, obtuse or more or less acute above, rounded 
or narrowed below, not constricted at septum; wall light cinnamon-brown, 1.5—-2 » thick, 
much thicker above, 5-10 4, smooth; pedicel one half length of spore or shorter, firm, con- 
colorous with base of spore. 
ON CaARDUACEAE: 
Flaveria campestris J. R. Johnston (F. angustifolia A. Gray), Kansas. 
TYPE LOCALITY: Manhattan, Kansas, on Flaveria angustifolia. 
DIstTRIBUTION: Known only from the type locality. 
140. Micropuccinia Millefolii (Fuckel) Arth. & Jackson; Arth. 
Bull. Torrey Club 48: 41. 1921. 
Puccinia Millefolii Fuckel, Jahrb. Nass. Ver. Nat. 23-24: 55. 1870. 
Puccinia conferta Dietel & Holway; Dietel, Erythea 1: 250. 1893. 
Puccinia recondita Dietel & Holway; Dietel, Erythea 2: 128. 1894. Not P. vecondita Roberge, 1857. 
Puccinia artemisiicola Sydow, Monog. Ured. 1: 14. 1902. 
Dasyspora conferia Arth. Résult. Sci. Congr. Bot. Vienne 346. 1906. 
Dasyspora Millefolit Arth. Résult. Sci. Congr. Bot. Vienne 347. 1906. 
Micropuccinia conferta Arth. & Jackson; Arth. Bull. Torrey Club 48: 40. 1921. 
Leptopuccinia artemisiicola Sydow, Ann. Myc. 20: 120. 1922. 
Leptopuccinia Millefolii Sydow, Ann. Myc. 20: 120. 1922. 
O. Pycnia unknown, probably not formed. 
III. Telia amphigenous and caulicolous, usually hypophyllous on broad leaves, solitary 
or gregarious, often crowded in irregular groups on yellowish spots, round or oval, 0.2-0.8. 
mm. across, early naked, compact, pulvinate, dark cinnamon- or chestnut-brown becoming 
cinereous by germination, ruptured epidermis usually inconspicuous; teliospores oblong or 
clavate, 16-23 by 35-58 uw, rounded, truncate, or obtuse above, rounded or, more commonly 
narrowed below, slightly or not constricted at septum; wall light cinnamon-brown, 1.5-3 4 
thick, darker and thickened above, 7~12 u, smooth; pedicel firm, colorless, one half to once 
length of spore; mesospores occasionally intermixed. 
This species is correlated with Dicaeoma Dracuncult (Thiim.) Arth. & Kern, the telial 
characters of the two species being very similar, and the hosts of the short-cycled species 
corresponding with the aecial hosts of the heteroecious species. This agreement doubtless. 
indicates a common origin for the two species. 
On CARDUACEAE: 
Achillea lanulosa Nutt., New Mexico. 
Achillea Millefolium 1,., California, Montana, Oregon. 
Artemisia albula Wooton, New Mexico. 
Artemisia californica Less., California. 
Artemisia frigida Willd., Colorado, Montana, North Dakota, South Dakota. 
Artemisia gnaphalodes Nutt., Colorado, Montana. 
Artemisia heterophylla Nutt., California. 
Ariemisia Hookeriana Besser, Utah. 
Artemisia ludoviciana Nutt., Colorado, Oklahoma, Oregon. 
Artemisia mexicana Willd., Texas. 
Artemisia Suksdorfii Piper, Washington. 
TYPE LOcALITY: Austria, on Achillea Millefolium. 
DistRIBUTION: North Dakota to northern Texas and westward to Washington and northerm 
California; also in Europe. 
