36 



JOURNAL OF MYCOLOGY. 



darker border. Hyphse tufted, short, simple, colored. Conidia elongated, 

 slender, slightly thickened towards one end (below ?) obtuse, colorless. 

 3-septate, 50—75 long." 



On living leaves of Eupatorium album. Long Island, JST. Y. (Miller.) 



46. Cbrcospora FiLispoRA, Pk (in herb.) 



Spots orbicular or irregular, brown (3—5 mm.) with a narrow, red- 

 brown border, amphigen(^us. Hyphse nearly obsolete, consisting merely 

 of closely compacted, elongated cells arising from the surface of little 

 sclerotoid tubercles thickly scattered over the surface of the spots and 

 bearing fascicles of long (125 — 200 x 2 — 2i /^ ), multiseptate, yellowish, sub- 

 hyaline, more or less curved conidia, which are so abundant as to give a 

 cinereous or lead colored hue to the surface of the spots. The conidia 

 are only slightly attenuated above. 



On Lupinus perennis, July, N. Y. (Peck.) 



47. Cercospora mqumANS, Cke. Grev. YII, p. 12. 

 "Amphigenous. Hyphse fasciculate, short, dark. Conidia obclavate, 



robust, 1—8 septate, brown (fuligineis), 30 — 70 x 6 



On living leaves of Gymnocarpus.^^ California (Harkness.) 



48. Cercospora Symplocarpi, Pk. De Thuem. M. U. no. 669. N. 

 A. F. 1259. 



Spots definite, suborbicular, brown, with a darker border {i—i cm.) 

 Hyphse amphigenous, short, thick, light brown, csespitose. Conidia long, 

 (75—125 !-'-) obclavate-cylindric, multiseptate, subhyaline. 



On living leaves of Symplocarpus foetidus, July, i^. Y. (Peck), Pa. 

 (Eau.) 



49. Cercospora cercidicola, Ell. Am. J^at. Oct. '82, p. 810. N. A. 

 "F. 1246. 



Spots when first appearing small (1 mm.) and nearly black, but soon 

 enlarging (3—4 mm ), and becoming light gray or dull white above but 

 remaining a rustv brown beneath, limited by a narrow, black-brown 

 raised border which is surrounded by a zone of rusty, shaded brown- 

 Hyphse amphigenous, fasciculate, brown, 90 — 114 x 3i — 4 subgeniculate 

 or subudulate above. Conidia oblong-clavate, faintly 3-septate, 30—40 x 



5—7 !J: 



On living leaves of Cercis Canadensis, Ky. to Kansas (Kellerman.) 



50. Cercospora Apii, Fres. Beitrag. p. 91, figs. 46-54. 



Spots amphigenous (4 — 6 mm.) pale brown, suborbicular with a defi 

 nite, narrow, raised margin. Hyphse mostly hypophyllous, in minute 

 (25 — 30 /^-) brown tufts, thickly scattered over the spots, pale brown, con- 

 tinuous or with 1—2 faint septa, subundulate above, 40— 60> ^—5 p-. Coni- 

 dia slender, obclavate, faintly (3—10 septate), 50—80 x 4 The affected 

 leaves are at first roughened h^re and there with groups of minute pus- 

 tules visible on both sides of the leaf. These groups soon become brown- 

 ish in the center, and the brown color soon develops into the spots above 

 described. 



