24 



JOURNAL OF MYCOLOGY. 



On living leaves of Yucca filamentosa, JS'ewfield, N. J. C. Yuccce, on 

 Y. gloriosa, Ga. (Ravenel.) 



Having carefully examined and compared the original specimens, we 

 consider the two species above cited as specifically the same. The speci- 

 mens of G. Yuccce have thes pots rusty brown, which is also true of O. 

 concentrica in the young state. We find the hyphse in both short. 



29. Cercospora Heteromeles, Hnrk. Bull. Cal. Acad. Sci., Feb. 

 1884, p. 88. 



Hypophyllous, on reddish brown, suborbicular, definitely limited spots 

 (i — f cm.) with a narrow, raised border; hyphse very short, brown, aris- 

 ing from a broad (60 80 !->-), black, tubercular base ; conidia subcylindrical, 

 attenuate above, brown, 5 — 13 septate, 100—130 x 6 /^-. Sometimes the 

 spots are confluent over large areas of the leaf ; they are also mostly of a 

 lighter color above (grayish), and often with a dull white spot included in 

 the brown. 



On leaves of Heteromeles arbutifoUa, Berkley, Cal. Sept. (Harkness.) 



30. Cercospora polygonacea, E. & E. A. F. 1254. 



On dark brown spots (2 — 3 mm.) with a slightly raised, narrow bor- 

 der, around which the leaf is often of a rusty brown, or the whole of the 

 leaf or that part of it including the spots becoming rusty brown and 

 dead. Hyphse mostly epiphyllous, 80—112 x 4 brown, faintly septate, 

 subgeniculate and imperfectly incise-toothed above. Conidia linear- 

 obclavate, hyaline, rather faintly multiseptate, mostly 80 — 100 fJ- long, but 

 exceptionally reaching twice that length. 



On leaves of Polygonum Convolvulus^ ]Srewfield, X. J. Aug. Quite 

 distinct from C. Polygonorum, Cke. 



31. Cercospora Pentstemoots, E. & K. Bull. Tor. Bot. club, XI, 

 p. 121. 



Amphigenous, on orbicular (.25— .5 cm.), purplish brown spots 

 (whitening out), with a narrow, raised border surrounded by a purplish 

 discoloration ; hyphse brown, continuous, nearly straight, subattenuated 

 and more or less denticulate above, 25—35 x 3 /^-, forming dark tufts 70 x 

 80 fJ- across, and thickly scattered over the spots, Conidia brownish, 

 swollen or enlarged above, 2—2.5 r- thick, and, with the slender filiform 

 base, 40—75 long, nucleate, becoming faintly 1—3 septate. The slender 

 base of the conidia is abnormal and may result from imperfect develop- 

 ment. The same was observed in G. oculata, and G. tuherosa. 



On Pentstemon cobaea the hyphse are more robust and as well as the 

 conidia darker than on P. grandijlora. 



32. Cercospora Ilicis, Ell. Bull. Tor. Bot. Club, VIII, p. 65. 

 Seated on small (2—3 mm.) brown spots which are limited by a narrow, 



raised border. Hyphse amphigenous, tufted, septate, subnodulose, 50 x 

 70 /J' long. Conidia terminal, obclavate-cylindrical, hyaline, nucleate and 

 at length 1—3 septate, 35—50 /J- long. 



On living leaves of Ilex glabra, Newfield, J., July. 



[COKTIKUED ON PAGE 33.] 



