•22 



JOURNAL OF MYCOLOGY. 



This differs from C. oci6?a?a, E. & K., in the different cliaracter of 

 tbe spots and its longer and more distinctly septate conidia. 

 h. Spots orhicidar or siiborhicular , hroivn. 



20. Cekcospora oculata, E. & K. Bull. Torr. Bot. Club, XL p. 116. 

 Mosth' epiphyllous, on dirty brown spots ( .2-5— .75 cm.) with a definite. 



slightly raised, narrow, darker border ; hyplife csespitose, short (25 — 30 x 

 -1 P-) obtuse, simple, brown, continuous, entire or slightly denticulate 

 above; conidia at first oblong and 1-septate, 20 — 30 /-'- long, at length 

 attenuated below and becoming 30—60 x 3— t y and faintly 3-septale. 



The spots are often concentrically wrinkled and sometimes confluent, 

 forming patches 2—3 cm. across. 



On leaves of Vcrnoniri Baldwinn. July. Kansas (Kellerman.) 



21. Cercospora CALL.E. Pk. & Clinton. 29th Rep. X. Y. State Mus. 

 p. 52. X. A. F., No. 1253. 



Spots definite, oblong, pale x i cm.) with a reddish brown bol- 

 der. HyphiE amphigenous. short, flexuous, somewhat nodulose, not at 

 all or indistinctly septate, slightly colored, cinereous or subolivaceous in 

 the mass, growing in minute, scattered tufts. Conidia cylindrical or 

 obclavate, at first continuous then elongated and 1 — 5 septate, nearly 

 straight, 30—75 long. 



On living leaves of CaUa palustris. Aug. Buffalo, X. Y. (Clinton.) 



Closely allied to C. niimphceacea, C. & E., but readily distinguished 

 even by the naked eye, by its scattered tufts of hyphjie. 



22. Cercospora nymph^eacea, C. & E. Grev. VI. p. 89. N. A. F.. 

 Xo. 50. 



Epiphyllous, on pale, suborbicular spots (i— i cm.) with a narrow, 

 slightly raised, reddish brown border. Hyphse slender and nearly hya- 

 line, collected in minute tufts so thickly scattered over the surface of the 

 spots as to appear evenly effused. Conidia very slender, almost thread- 

 like, multiseptate, hyaline (yellowish in the dry specimens) straight or 

 curved 60—90 /-'■ long. The fungus to the naked eye is lead colored. In 

 the dry specimens the spots are concave above and convex below. 



On leaves of Nymphcea odoratci, Xewfield, X. J. 



23. Cercospora rubella, Cke. Grev. VII. p. 34. Rav. F. Amer. 289. 

 Hyphse epiphyllous (amphigenous V) subfasciculate, browm, on rusty 



red spots and areas of the leaves, bounded by a narrow, raised border. 

 Conidia cylindrical, attenuated above, hyaline, 1—2 septate, 30—50 long. 

 On leaves of Eriogonum tomentosum, S. Carolina (Ravenel.) 



24. Cercospora Cephalanthi, E. & K. Bull. Torr. Bot. Club, XI. 

 p. 121. 



On orbicular (1 — 4 mm.) red-browm spots with narrow% dark, raised 

 border. Hyphse mostly epiphyllous, tufted, brown, continuous or faintly 

 septate, 24—30 x 3—4 at length elongated (40—56 f-^) and crooked or 



