58 BOTANICAL GAZETTE [july 



Phyllachora ROUREASyd., char, emend. — Ascigerous stromata 

 black, numerous, scattered over the leaf, 2-3 mm. in diameter, 

 visible from both sides of the leaf; shining above, dull below, locules 

 150-240^1 internal diameter, numerous in the stroma. Cl3^eus 

 above and below extending slightly beyond the locules. Asci 

 numerous, linear, 8-spored, about 100 X 7-10 /x, obtuse. Spores 

 uniseriate, hyaline, continuous, 5X10^1, oval. Paraphyses scant, 

 filiform. — Figs. 17 and 18. 



On Rourea glabra: Luquillo, 5447. 



The original description by Sydow was based on Philippine material which 

 contained only conidia. It is very probable that the present specimen is 

 cospecific with that of Sydow, and the name is therefore retained. 



Phyllachora securidacae P. Henn.^ — Figs. 19 and 20. 



On Securidaca virgata: Rosario, 9491; Mayaguez, 7402, 1196, 313; 

 Maricao, 8981. 



This species was described from South American material, and our speci- 

 mens differ as foUows from the description: Locules are numerous, not few; 

 the clypeus is distinctly rugose, a striking character that is not mentioned in 

 the description; locules are somewhat larger than as described, and the waDs 

 are black, not brown; spores are quite uniformly 10X5 /a, whUe the original 

 description gives 1 5-1 8X5-6 /a. Notwithstanding these differences it seems 

 best to report our specimens under this name. Due to an error in host deter- 

 mination 2 of these specimens were reported by Carman as P. perforans 

 (Mycologia 7:340. 1903). 



Phyllachora simplex Starb. — Fig. 21. 



On Coccolobis laurijolia: Mona Island, 6171, 6433; San Juan, 4060; 

 Bayamon, 394; MonaciUo, 9340; Martin Pena, 931 1, 9716; San German, 

 7521, 7519; Tanama Rio, 7896. 



Phyllachora tragiae (B. and C.) Sacc. — Fig. 22. 



On Croton lucida: Guanica, 356, 6839; Mona Island, 6217, 6211, 6153. 

 On Croton flavens: Quebradillas, 9251; AquadiUa, 7253. 



The specimens on the 2 hosts differ sUghtly, particularly in that the 

 stromata are more frequently unilocular on C. flavens, and that on this host 

 the whole structure is more pale, less carbonaceous. Fihform conidia were 

 found associated with the stromata. 



