NORTH AMERICAN CERCOSPOR^. 



51 



' On reddish brown, roundish or irregularly shaped and rather indeh- 

 nitelely limited spots, 2— 3 mm. in diameter. Hyphie mostlv hypophyllous, 

 70 — 80 x 3 — 4/'-, brown, 1 — 3 septate, undulate or often abruptly bent 

 above, rising in loose spreading tults of B— 8 frorii a minute tubercular 

 base. Conidia oblong-cylindnc and nucleate, becoming ob-clavate-cylin- 

 dric and mostly o-stplale, ; I— -"0 x 3.5— 4 ,". The spots become more or 

 less confluent and the leaf assumes a reddish brown hue. 

 On iJei-^ncdium acuminalum, July, Kansas (Kelieiman.) 

 e. Spots none, w at least not very conspicuous. 

 a. Tufts scattered. 



76. CERCOsroKA SPAKSA, Cke. Grev. XII, p. 31 Kav. F. Amer. 590. 

 Hyphse hypophyllous, short, scattered, forming indeterminate, fus- 

 cous patches which appear under the lens as a scanty, fuscous down. 

 Conidia attenuated above, 2—3 septate, hyaline, 50—70 x 3 /^-. 



On leaves of Kalmia latifoUa, S. Carolina (Eavenel.) 



77. Cercospora sPH^Ri^FORiiis, Cke. Grev. VI, p. 140. Rav. F. 

 Amer. 63. 



Hyplise amphigenous, short, simple, dark brown, in densely fascicu- 

 late, sphseriaeform tufts which are collected in groups forming dark 

 brown patches on the leaf. Conidia linear, attenuate above, multi&ep- 

 tate, 60-80 long. 



On (elm ?) leaves, Fla. (Ravenel ) 



78. Cercospora pulvinula, C. & E. Grev. VII, p. 40. ]Sr. A. F. 644. 

 Punctiform, hypophyllous. Hypbse very short, collected into minute 



subolivaceous tufts sprinkled over the lower surface oi the leaf. Conidia 

 cylindrical, faintly 1—2 septate, hyaline, 20—35 /j- long. 

 On leaves of Ilex opctca, Xewtield, N. J. 



79. Cercospora Epilobii, Schn. De Thuemen, Fungi Austriaci, 532. 

 Mich. II, p. 642. 



''Tufts punctiform, gregarious, subolivaceous. Hyphie fasciculate, 

 round, 50— 70x 5 /^, slightly tortuous, denticulate, olivaceous, subh} aline 

 above, guttulate, spuriously septate. Conidia cylindrical, 40—50 x 5— 5J /' 

 2 — 3 septate, not constricted, guttulate, hyaline." 



On Epilohium alpinum. White Mts., II. (Farlow.) 



The description is copied from Michelia. We have seen no specimens. 



80. Cercospora Rafinesqui^, Hark. Cal. Hull. Acad. Sci., Feb. 1884. 

 ''Hypophyllous, in minute tufts covering a great part of the leaf: 



hyphse brown, very short. Conidia oblong, brown, 2—7 septate, 20 — 30 x 

 6 



On living leaves of Bo finesquia Calif ornica. San Franci^^co. Cal., May." 



81. Cercospora Diospyri, Thuem. Mycotheca Universalis, 1273. 

 Grev. XII, p. 31. 



Hyphse nearly straight or somewhat flexuous, continous, slender, oli- 

 vaceous, collected in small tufts which form orbicular patches (3—4 mm.) 



