156 Peck: New species of fungi 



a subclavate shape to the whole chain. An occasional constric- 

 tion is seen in some chains, which is suggestive of Septonona. 



Maculae foliorum facie superiore griseae, facie inferiore pur- 

 pureo-brunneae, saepe confluentes ; hyphae hypophyllae, steriles 

 repentes, ramosae, vulgo breves, hyalinae pallidaeve, ferttles sub- 

 erectae, multiseptatae, 20-80// x 6-10//, areas tomentosas brun- 

 neas formantes, loculis 4-8// longis, 6—iOfi latis, paucis septo 

 longitudinali aliquando divisis. 



Cercospora brunnea 



Tufts hypophyllous, minute, densely effused on angular, some- 

 times confluent brownish spots, which are 2-5 mm. broad ; hyphae 

 crowded, flexuous, sparsely septate, brown, 60-100// X 5-6//; 

 spores cylindric or subclavate, often curved, 1-3-septate, subhy- 

 aline, 40-60 fx long, 5-6 ji broad. 



On leaves of tall white lettuce, Prenanthcs altissima L. Rogers, 

 Arkansas. September. E. Bartholomew. This differs from C. 



F 



Prenanthis E. &. K. in its brown hyphae and septate spores. 



Caespites hypophyUi, minuti, dense effusi, maculas angulares, 4 

 saepe confluentes, brunnescentes, occupantes, 2-5 mm. latas ; hy- 

 phae confertae, flexuosae, 1-3-septatae, brunneae, 60-100// x 5- 

 6 [i ; sporae cylindraceae vel snbclavatae, saepe curvatae, subhy- 

 alinae, 40-60 (i longae, 5-6 // latae. 



Cercospora biformis 



Spots brown, angular, limited by the veinlets of the leaf, some- 

 times confluent; hyphae hypophyllous. flexuous, septate, brown, 

 30-1 50 /i long, 4-6 /i thick; spores of two kinds, one nearly 

 cylindric, hyaline, obtuse at each end, commonly 3- or 4-septate, 40- 

 100 /i long, 4-6 /i broad, the other narrowed above into a long 

 slender prolongation, hyaline, 6-12-septate, about 6^ broad in the 

 widest part, 3 fi in the narrowest part. 



On living or languishing leaves of passion ^ow^r. Pas si flora in- 

 carnata L. Batesville, Arkansas. October. E. Bartholomew. 



This species differs from Cercospora fiiscovirens Sacc, an in- 

 habitant of the yellow passion flower, Passiflora littea L., in pro- 

 ducing yellow spots on the leaves and in the dimorphic character 

 of the spores. From Cercospora trimcatclla Atk., which also in- 

 habits leaves of P. incarnata, it may be separated by its angular 

 spots with no brown margin, by Its hypophyllous hyphae, and by 

 the two-formed spores. 



