JOURNAL OF MYCOLOGY. 



On living or languishing leaves of Caulophylhim thalictroides, July. 

 :N". Y. (Feck.) 



63. Cercospora squalidula, Fk. 33d Rsp. X. Y. State Mus., p. 29. 

 Spots angular or suborbicalar, brown or grayisli brown with a dark 



border. Ilyphse amphigenous, tufted, slightly nodulose above, colored. 

 Conidia cylindrical or subclavate, very unequal in length, 30—110 long, 

 nearly hvaline, continuous or with 1—3 faint septa. The spots are some- 

 times of a uniform, dark brown color, and sometimes grayish with a 

 darker border. 



On living l^^aves of Clematis Virginiana, Aug., N. Y. (Peck), Iowa 

 (Hoi way.) 



This is very closely allied to C. oUvascens, Sacc, but a careful com- 

 parison of authentic specimens from Prof. Peck with the specimens in 

 Mycotheca Veneta 1251, shows that the tufts of hyphse in Saccardo's 

 specimens are of a somewhat lighter color and less compact, the hyphae 

 longer, rather lighter colored and more distinctly toothed and geniculate 

 above ; coaidia also longer and narrower and spots more angular, limited 

 mostly by the veinlets of the leaf. In Peck's specimens, too, the hyphae 

 are amphigenous. It is not improbable that this and the next i^^o. will 

 prove to be the same. 



64. Cercospora rubigo, Cke. & Hark. Grev. XIII, p. 17. 

 ''Amphigenous. Spots ferruginous, elliptical and irregular. Hyphse 



very short, scattered. Coaidia cylindrical, straight or curved, ends 

 obtuse, 3— 4-septate, hyaline, 35—40 x 4 /^-." 

 On leaves of Clematis, Cal. (Harkness.) 



Cercospo"ra EcHmocYSTis, E. & M. Am. Nat., Dec. '82, p. 1003. 



Spots small (1—3 mm.), angular, bounded partly by the veinlets of 

 the leaf. Hyphse brown, fasciculate, hypophyllous, scarcely septate, 35 

 —45 X 4 Conidia clavate-cylindrical, hyaline, 3—6 septate, 80— 105 x 

 3 /-'-. The spots are very abundant and leaves on wiiich they abound 

 soon wither. Hyphse also occur on the upper surface of the leaves. 



On living leaves of Echinocystis lohata, Ky. a id Ohio (Kellerman.) 



d. Spots indefinite. 



66. Cercospora graj^uliformis, Ell. & Hoi. Jour, of Mycol. I, p. 6. 



Amphigenous, on large (1 cm.) round, indehnitely limited brown 

 spots. Hyphse short (15 — 25x3/^-) continuous, brown, nearly straight, 

 obtuse and entire at first, becoming subundulate and somewhat toothed 

 above, densely compacted into small (75/^), sphseriseform tufts, scattered 

 quite thickly over the spots and resembling minute perithecia, brownish 

 at first but at length black. Conidia cylindrical, straight, brownish, 1 — 8 

 septate, 17 — 85 x 2i — 3 Allied to C. sphoericeformis, Cke.. but quite dif- 

 ferent from C. Violoe, Sacc. 



On leaves of Viola cucullata, July, Iowa (Holway.) 



[CONTINUED ON PAGE 49.] 



