1893.] NATURAL SCIENCES OF PHILADELPHIA. 171 



olive-brown, continuous, nucleate, torulose above 35-50 x 4//. 

 Conidia obclavate, brownish, obtuse, nearly straight, faintly 1-4- 

 septate, 40-90 x 4-5//.. 



Quite distinct from C. crotontfolia Cke. which is on definite spots 

 and has much shorter hyphre and smaller conidia. 



Cercospora ditissima E. & E. 



On leaves of Cnicus undulatus, Rockport, Kansas. June, 1892. 

 (E. Bartholomew, No. 605.) 



Spots dirty brown, subindefinite, suborbicular, 3-5 mm. diam. 

 Hypha? amphigenous, densely tufted on a dark colored, tubercular 

 base 75-85/./. diam., short (15-20x2^-3//..), subhyaline, toothed 

 above and subobtuse, simple, continuous, 30-75 x 4-6//, subhyaline, 

 straight, oblong or obclavate, 3-5-septate. 



Cheiromyces comatus E. & E. 



On decorticated Azalea, Newfield, N. J. June, 1877. 



Gregarious on the bleached surface of the wood. Acervuli minute 

 (j-f mm. long), subhysteriiform-erumpent, black. Conidia multi- 

 partite, the divisions (nearly 100 in number) subcylindrical, some- 

 what attenuated above, 35-40 x 2-2*//., 5-7-septate, hyaline, united 

 at base so as to form a brush-like tuft 15-20// thick. The tufts 

 arise directly from the cells of the proligerous layer, without any 

 distinct basidia. The habit is the same as that of C. beaumontii B. 

 & C. as distributed in N. A. F., 762, and like that species and C. 

 tinetus Pk., differs considerably from the species figured by Berk, in 

 Int. Crypt. Bot. in the absence of any pulvinate stromatic base. 



Volutella bartholomaei E. & E. 



On leaves of Sporobolus asper, Rockpoi't, Kansas. Sept., 1892. 

 (E. Bartholomew.) 



Sporodochia evenly scattered, hemispherical or oblong-hemispher- 

 ical, olive-black, i— i mm. diam., made up of closely packed, oblong- 

 cylindrical, olivaceous, 2-nucleate, 9-11 x 2J/z conidia arising directly 

 from the proligerous layer, without any visible sporophores, the 

 whole surrounded by an imperfectly developed, membranaceous ring 

 or border subtended by a few (3-6) erect-spreading olivaceous, con- 

 tinuous bristles 4-5//. thick at base and tapering to the obtuse, sub- 

 hyaline apex. 



Stigmina liriodendri E. & E. 



On fading leaves of Liriodendron tulipifera, Saltillo, Mississippi. 

 Oct., 1892. (Tracy, No. 1,829.) 



