]^ORTH AMERICAN ( ERCOSPOR^. 



55 



Oil living" leaves of Asdepias incarnata, X. Y. (Peck & Gerard) and 

 at Xewfield, N. J., on A. obtmifoUa. 



A. F. 823 (b) on leaves of Gerardia quercifolia is probably dis- 

 tinct, but without fresh specimens we will not now separate it. 



97. Cekcospoka Phaseoloru^i, Cke. Grev XII, p. 30. Rav.- Fungi 

 Amer. 584. 



'"Hyphse epiphyllous, fasciculate, short, brownish on indeterminate, 

 brownish, inconspicubus spots. Conidia sub-cylindrical, 3—5 septate. 

 40—50 X 4 pallid. 



On leaves of Phaseohis, S. Carolina (Ravenel.) 



Spores not iialf as long as in C. olivacea, Sacc. 



98. Cercospora A]mpelopsidis, Pk. 30th Rep. X. Y. State Mus. p. 

 55. [C. pustula. Cke. Grev. XII, p. 30 ?) 



Hypha3 fasciculate, brown, 2—3 septate, subundulate above, 70— 90 x 

 6—7 /-t, liypophyllous, forming brown patches 2—3 mm. in diameter and 

 limited mostly by the veinlets of the leaf. Conidia subcylindrical, brown, 

 3 — 4 septate. The upper surface of the leaf is marked with dark brown 

 spots around which it is a pale reddish tint. 



On Ampelopsis quinquefolia , Bethlehem, X. Y. (Peck). Pennsylva- 

 nia (Rau.) Found also in Xew Jersey. 



The conidia on C. pustida, Cke., are said to be hyaline, ^\"e have not 

 been able to find any conidia on the specimen in F. Am., but their general 

 appearance is the same as that of the X. J. and Penn. specimens. 



99. Cercospora Lupini, Cke. Hedwigia, 1878, p 39. Rav. Fungi 

 Amer. 67. 



On indefinitely limited, inconspicuous, dark colored spots, scarcely 

 distinguishable from the surrounding parts of the leaf. Hyphse branch- 

 ing and septate, brown. Conidia cylindrical, straight, 3—5 septate, 

 scarcely attenuated, hyaline, 50 — 70 x 3 . 



On leaves of Lupinus diffusus, S. Carolina (Ravenel.) 



100. Cercospora racemosa, E. & M. Am. X^at., Xov. 1884. 

 Effused in small (1—2 mm.) patches which are greenish at first, then 



rusty brown and often more or less confluent. Hyhpse interwoven, 

 bearing the oblong or oblong cylindrical conidia in a racemose manner on 

 short, lateral branches and at their tips. Conidia hyaline, 1—5 septate, 20 

 —80 X 5/^-. 



On the under side of leaves of Teucrium Canadense., Iowa (Arthur.) 



This is certainly very closely allied to C. ferruginea, Fckl , differing 

 principally in its shorter, paler spores, and it may be that a further com- 

 parison may reduce this to a mere variety of that species. 



100 a. Cercospora Dulcamara (Pk.) Bamndaria Dulcamarce. Pk. 

 33d Rep. X. Y. State Mus. p. 30. 



Hyphse nodulose, abruptly bent and branched irregularly, pale brown 

 (under the microscope), continuous, 30—60 x 5—7/^, bearing the conidia 



