November, 1888.] 
NEW NORTH AMERICAN FUNGI. 
115 
Starkville, Miss., Sept. ’88. (Tracy, 83.) Spots dirty-white, sub- 
angular, 1—4 mm. thin, deciduous. Hypha; Amphigenous, tufted, 
35 x 3—4, browish, continuous, denticulate, crooked. Conidia 
slender, 60—TO x 3, faintly septate, hyaline. 
Cercospora nubilosa, E. & E.—On leaves of Smilax , Cleve¬ 
land, Ohio, July, ’88, Tracy No. 68. Spots suborbicular, J—1 
cm. diam. smoky-brown, appearing as if the leaf had been stained 
with pale-black ink, margin definite but without any border. 
Hyphae hypophyllous, in minute punctiform tufts, short (15—25 x 
2), brownish, arising from a subtubercular base, Conidia cylindri¬ 
cal 2-6-septate. subhyaline obtuse at each end, 40—90 x 3J—5. 
Very different from C. Smilacis, Thum, 
Cercospora tubercclans, E. & E.—On leaves of Liquid - 
ainbar styraciflua, Starkville, Miss., June, ’88. Prof. S. M. 
Tracy. Forming rounded tubercles about 1 mm. diam. appearing 
first along the midrib and main nerves towards the tip of the leaf 
on the underside and soon spreading over and killing the entire 
leaf. These tubercles are of a light color inside but are thickly 
clothed on the surface with short, 25—35 x 4— 5, continuous, erect 
olivaceous hyphae which are entire or slightly toothed above and 
bear the subolivaceous subcylindrical, 1-5-septate conidia 30— 
75 x 4—5. This is very different from Cercospora Liquid- 
ambaris, C. & E ., which is on definite spots. 
Cercospora penicillijs, E. & E.—On leaves of Myrica 
cerifera still hanging on the branches or lately fallen., Newfield, 
N. J. June, ’88. Hyphae hypophyllous in compact and distinct 
fascicles forming little black brush-like tufts scattered on brick 
colored spots. The hyphae under the microscope are of a smoky 
olive-black color, (paler above), multiseptate, 150—200 x 4—6, 
more or less bent above. Conidia narrow-obclavate, hvaline, 
nucleate becoming 3-5-septate, 50—75 x 3J—4. This is found 
associated with Gnomonia Myricae E. & E., of which it is not 
improbably the conidial stage. On the same leaves also occurs 
the following species. 
Cercospora dispersa, E. & E.—Hyphae effused, standing 
singly or 2—3 together, olive-brown, multiseptate, about 150 x 4 
--5, nearly straight, subdentate at the apex, forming indefinite 
olivaceous patches scattered over the lower surface of the leaf. 
Conidia slender above, smoky hyaline, mostly a little curved. 3- 
5-septate 80—110 x 3J. Differs from the preceding principally 
in its effused mode of growth. The color also is not as dark. 
Has the general appearance of C. sordida, Sacc. 
