71 
(S-10//), on a small (30-35//) tubercular base, bearing at their apices the 
linear-lanceolate, subhyaline, faintly 3-G-septate 30-00 by 2£-3//conidia. 
The spots are at first of a reddish-purple tint. This is entirely differ¬ 
ent from C. sordida , Sacc., an olivaceous effused species which was 
observed on the under side of the same leaves. 
Ceroospora dolichi, n. s. On leaves of Dolichos sinensis. Stark, 
ville, Miss., September, 1888. Prof. S. M. Tracy. Amphigenous, but 
more abundant below. Hypliae short 20-25 (exceptionally 30-35) by 4-5/t, 
olivaceous, entire or slightly toothed above, continuous or with one or 
two obscure septa, forming small but close tufts without any distinct 
tubercular base, the tufts scattered over almost the entire surface of 
the leaf both on the reddish spots and on the green parts of the leaf, 
but unevenly distributed, so as to present a clouded or mottled appear¬ 
ance. Conidia slender obclavate, hyaline, 3-5 or more septate, 50-100 
by 31-4. The spots are much like those of Amerosporium ceconomicum , 
E. & T. (J. M. 1Y. p. 102), only not white, but rusty-red, or at most only 
whitish. 
Ceroospora sii, n. s. On leaves of Slum cicutcefolium. Racine, 
Wis., September, 1888. Dr. J. J. Davis, No. 02. Mostly liypophylious, 
in small (2-3 mm ) but dense patches, but finally confluent, so as often to 
cover nearlv the entire surface of the leaf, which is more or less mottled 
and stained yellowish, black above. Hypliae loosely fasciculate, smoky, 
or olivaceous-hyaline, 40-00 by 5/*, strongly shouldered and toothed 
above, continuous or sparingly septate. Conidia lateral and terminal, 
oblong-cylindrical, mostly 1-septate, very sliglitlv curved, granular, 
20-45 by 5-7// (mostly 30-40 by 6-7//). 
Ceroospora agkeratoides, n. s. On living leaves of Eupatorium 
ageratoides . Newfield, N. J., July to September, 1885. Hypophyllous. 
Tufts effused, forming olivaceous, velvety patches l-3 mm in diameter, sub- 
angular and bounded by the veinlets of the leaf, finally confluent and 
nearly tobacco brown. Hypliae in minute tufts of 5-8 together, simple, 
septate, brown, subundulate above 50-90 by 4//. Conidia cylindrical 
or lanceolate, 40-75 by 3^-5//, 4-0 septate, pale olivaceous. Closely 
allied to G. clavata , Ger. The color and habit are much the same but 
besides the different host plant, this has the hypliae longer and in tufts 
less dense, and the conidia, though of the same general character, not as 
variable in length and mostly narrower. On the same leaves are 
light colored subangular spots, also limited by the veinlets of the leaf, 
but they do not produce the Ceroospora. In a var. of this (?) on E. 
album , the light-colored spots are wanting, the liyphae mostly shorter 
(40//.) and the conidia rather longer (70-80//) and narrower (3//). 
Cercospora perfoliata, n. s. On living leaves of Eupatorium 
perfoliatum. Racine, Wis., September, 1888. Dr. J. J. Davis, No. 
04. Hypophyllous. Hypliae decumbent, with their free ends ascend¬ 
ing, 30-40 by 4-5//, nucleate, continuous, brownish, subentire and 
obtuse above, effused in suborbicular brown patches, not definitely lim- 
