(338) 



3. New Florida Fungi. 



Helotiaceae 



Hymenoscypha nigromaculata sp. nov. 



Epiphyllous on jet black suborbicular spots ^-i cm. in di- 

 ameter ; ascomata gregarious, brown, sessile or substipitate, 

 margin inrolled, covering the brownish disc when dry, ex- 

 panding to turbinate when moist, about ]/^ mm. broad and 

 high, peridium of thin-walled, brownish, narrow, prosenchy- 

 matous threads about 3 // thick, the margin roughened by the 

 slightly swollen projecting ends of the threads ; asci numer- 

 ous, broadly clavate, about 70 x 14/^; paraphyses few, 

 thread-like, but rather thick and substrict, ends not swollen ; 

 ascospores distichous or subinordinate, hyaline, irregularly 

 oblong, continuous, 18-20 x 6 /i. 



On languishing leaves of Iris sp., Palmetto, Fla., Nov. 

 30, 1901, S. M. Tracy, no. 7299. 



The specimens seem slightly immature. It is possible 

 that the spores may develop septa at full maturity. 



Perisporiaceae 



Dimerosporium vestitum sp. nov. 



Epiphyllous, forming a thin black widely effused coating ; 

 mycelium slender, pale brown, about 3-4,"- thick; conidia 

 subglobose, sarcinella-like, usually 4-celled, opake, black, 

 short-stalked, about 20//; perithecia dark brown, about 85- 

 100/-/, wall-cells minute, close woven, densely clothed with 

 depressed-spreading, brown hairs which are substraight at 

 base, but variously flexed above, continuous or sparingly 

 septate, 100-200 x 4-5 fi\ asci broadly clavate, 35-40 x 8- 

 10//; paraphyses abundant, thread-like; ascospores dis- 

 tichous or inordinate, narrowly ovate, unequally septate, hy- 

 aline, conspicuously 3-guttate, about 8 x 3-4 fit. 



On living leaves of Baccharis glomcrulijlora, Manatee, 

 Fla., Dec. 11, 1901, S. M. Tracy, no. 7279. 



This is at once distinguished from other species of Dimero- 

 sporium on Baccharis by the abundant vestiture of long brown 

 hairs. The conidial stage would easily pass for Sarcinclla 

 helcrospora Sacc. 



