250 



BOTANICAL GAZETTE 



[march 



Marias 



The stromata differ essentially in shape from those of D. pteridophila 

 Speg. (fig. i). 



Dothidella flava, sp. nov. (text figs. 2, 3). — Stromata pale to 

 yellow, circular when young, linear when old; when mature, 

 1600 n long by 270 /jl wide, subepidermal, later erumpent, rising 

 to considerable height above the leaf surface. Perithecial locules 



Fig. 2 



Fig. 3 



Figs. 2, 3. — Cross and long sections showing arrangement and shape of pen 

 thecia and pycnidia. 



globular, 60-70 ju in diameter, arranged in one or two rows in the 

 stromata. Asci linear, 8-spored, 34-51X6/*. Spores hyaline, 

 2-celled, oblong, 3.5Xi4/z- Conidia filamentous, 40X1. SM> 



borne 



pycnidial 



stroma 



On Lithachne paiiciflora: TrujiUo Alto, 9394, 7654; Mayaguez, 1062, 743 2 ! 

 Florida Adentro, 7665 (type), 7650. 



