104 
JOURNAL OF MYCOLOGY. 
[Vol. Ill, No. 9, 
Cercospora Polytalni^e, E. & K.—On leaves of Polytmiia Nut- 
tallii. Manhattan, Ks., June, 1887. W. T. Swingle. Hyphse very short, 
olivaceous, forming dense, sphseriseform tufts on dark (3—4 mlllim.), 
suborbicular or subelliptical spots, with a dirty-white center; conidia 
hyaline, granular, becoming 3—4-septate, 70 — 100 x 4—5 p. 
Cercospora Prenanthis, E. & K.—On living leaves of Prenanthes 
aspera. Manhattan, Ks., August, 1887. W. T. Swingle. Amphigenous, 
tufts punctiform, minute, black, scattered quite evenly over the greater 
part of the leaf or more densely grouped in areas formed by the veinlets 
of the leaf ; spots none ; hyphse short 25—35 x 4 /'-, continuous, suboli- 
vaceous, simple, entire; conidia obclavate-cylindrical, nucleate and 
granular, nearly hyaline, 50—60 x 5—6 /-*. 
Cercospora pachypus, E & K.—On Heliantkus lenticularis. Manhat¬ 
tan, Ks., Aug., 1887. Swingle. Amphigenous, overspreading the greater 
part of both surfaces of the leaf, which is soon mottled with indefinite, 
yellowish spots above. On these spots, which finally become dirty brown, 
the fungus makes a denser growth, but it is not confined to the spots; 
hyphse short, 20—30 x 6—8 /'• or, when young, swollen at base (8—10 P 
thick), torulose and dentate above, olive brown, continuous; conidia 
oblong or subcylindrical, obtuse at both ends, 1-septate, olivaceous, 25—70 
x 5—7 p, the longer ones narrower above. The tufts of hyphse are small 
(about35/'- across), with mi stly 12—15 in a tuft. This is very different from 
C. Helianthi , E. & E., Journ. Mycol., Ill, p. 20, as will be seen by referring 
to the description of that species. The single septum in the conidia of 
the present species seems to be characteristic and not due to immaturity. 
Peronosfora Swinglei, E. & K.—On leaves of Salvia lanceolata. 
Manhattan, Ks., June, 1887. W. T. Swingle. Forming cinereous patches 
of greater or less extent on the lower surface of the leaves, which are 
marked with rusty spots and blotches above; fertile hyphse dichotomously 
branched above, the ultimate divisions short and spine-like; conidia 
elliptical, dull violet, 20—22 x 16—18 p. 
Glceosporium Medicaginis, E. & K. —On leaves, petioles and 
stipules of Alfalfa, Medicagosativa. (cult.) Manhattan, Ks., May, 1887. 
The affected leaves, which are principally the lower ones, turn yellowish 
and become dead and dry; acervuli scattered on these withered leaves, 
innate,.blackish, rather large, visible on both sides but more prominent 
and opening below ; spores oblong, cylindrical, granular, subhyaline, 
mostly distinctly narrowed in the middle, 15—20 x 3—4 p. G. trifolii , Pk., 
is said to be on concentrically zoned spots and to have the spores 15—23 
x 4 — 6.3 P. 
Cylindrosporium Eryngii, E. &K.—On living leaves of Eryngium 
yucccefolium. Mound City, Ks., July, 1887. W. A. Kellerman. Acervuli 
minute, innate, seriate, ejecting the cylindrical, slightly curved, multi- 
nucleate, becoming multiseptate, 70—80 x 3—4 /', conidia on both sides 
of the leaf, forming conspicuous, white striae, 4—1 cm. long; fertile 
hyphse short and rudimentary. The leaf is slightly blackened, forming 
narrow (one millim.), brown, spots 4—1 cm. long. This resembles closely 
Cylindrosporium veratrinum , ISacc. & Winter. 
