1895.] NATUKAL SCIENCES OF PHILADELPHIA. 439 



Cercospora Grindeliae E. & E. 



On leaves of Grindelia sp. Berkeley, Cala., June 1894. W. C. 

 Blasdale, No. 258. 



Amphigenous, scattered in small, more or less confluent patches 

 over both sides of the leaf. Hyphae tufted, short, simple, continuous, 

 15-35 x 4 fj., subentire, or imperfectly toothed above, subhyaliue. 

 Conidia slender-clavate, yellowish-hyaline, granular and nucleate, 

 becoming faintly 3-6-or more-septate, sometimes constricted at one 

 or more of the septa, and often abruptly enlarged at one end, 

 50-140 x 4-7 ii. 



Cladosporium aromaticum E. & E. 



On living leaves of Rhus aromatica. Pasadena, Cala., August 

 1894. Prof. A. J. McClatchie, No. 779. 



Epiphyllous, scattered, not on any definite spots. Sterile hyphae, 

 scanty, creeping, branched, fertile hyphae scarcely tufted, erect, pale 

 olivaceous, septate and constricted at the septa, subgeniculate, 30-70 

 x5//.. Conidia terminal, concatenate, olivaceous, oblong-cylindrical, 

 uniseptate, not constricted, 12-22', (mostly about 15) x 5//. 



The hyphae thickly scattered over the surface of the leaf give it a 

 smutty appearance. 



Macrosporium toruloides E. & E. 



On dead stems of Urtiea Lyallii. Pullman, Wash., March 1894. 

 Prof. C. V. Piper, No. 320. 



Effused, forming a thin, olive-black, velutiuous layer for several 

 cm. in extent. Hyphae toruloid, closely septate, branched. Conidia 

 variable, 15-40x10-15//, 3-6-septate arid rather sparingly muri- 

 forrn, the smaller ones sarcinuliform, the larger ones obovate, borne 

 on deciduous, closely septate pedicels 25-45 x 5-5 //, enlarged above 

 into the conidia. 



Both the sterile and fertile hyphae are so closely septate as to 

 resemble threads of Torula. 



Sporidesmium punctans E. & E. 



On bark of living limbs of Planera aquatica. St. Laudry, Co., 

 Louisiana, July 1894. Langlois, No. 2,392. 



Punctiform, scattered, conidia cespitose, short stipitate, of various 

 shapes, subglobose, 20-30 //, diam. or often clavate or obpiriform, 

 clathrate-septate, brown, 25-75x12-20//, including the short, 12- 

 20//, septate pedicel. 



