24 ILLINOIS BIOLOGICAL MONOGRAPHS [190 



28. Phyllachora No. 6. 

 [Figure 103.] 

 Spot pale yellow extending in a 2 to 3 mm. zone around the stromata. 

 Stromata dull black, visible from both surfaces, 1 to 2 mm. in diameter, 

 flat. Stromata occupying the whole of the mesophyll. Upper and lower 

 clypeus epidermal, extending somewhat beyond the stroma of the meso- 

 phyll. Locules few, small, 150/n in diameter, each with a lining wall about 

 15m thick, of character quite distinct from that of the stroma. Asci 8- 

 spored, 60 to 65 x 7 to ll/x- Paraphyses filiform. Spores oval, hyaline, 

 obtuse, 18 X 5|i, inordinate. 

 On unknown host. 



British Guiana: Tumatumari, July 10, 1922, 139. 



Endodothella Theiss. and Syd. 

 Ann. Myc, 13:582, 1915. 



29. Endodothella anacardiacearum Stevens n. sp. 

 [Figure 56.] 

 Stromata scattered between the veins, 1 to 2 mm. in diameter, black 

 below, brown above, causing hypertrophy of the leaf, doubling its thickness, 

 consisting of a rather close pseudoparenchyma occupying the mesophyll 

 throughout its thickness and with thin clypei above and below extending 

 slightly beyond the stroma. Locules many, irregularly placed, subglobose, 

 50 to 215m broad, 140 to 300m deep. Asci 8-spored, 83 to 90 x In. Para- 

 physes filiform, crooked, gelatinous. Spores 1-septate, 11 to 14 x 3.6^- 

 On unknown species of the Anacardiaceae. 



British Guiana: Demerara-Essequibo R. R., July 15, 1922, J5J.- Tu- 

 matumari, July 8, 1922, 973. 

 The stromata develop very irregularly, deforming all tissues and pro- 

 ducing the greatest hypertrophy below. (Figure 56). 



30. Endodothella tapirae Stevens n. sp. 

 [Figures 57 to 59] 

 Stromata scattered, circular, about 1 mm. in diameter, showing black 

 from one or both leaf surfaces; surrounded by a pale zone about 1 mm. in 

 width. Stromata often raised to double the thickness of the leaf; located 

 in the mesophyll, consisting of a rather compact, black, pseudoparenchyma 

 with clypei on one or both surfaces; paraphyses many, filiform. Asci long, 

 narrow, 83 x 7m, 8-spored. Spores 11 x 3.5m, ovate, 2-celled. 

 On Tapir a sp. 



British Guiana: Kartabo,July 22, 1922,5.^5. Specimen in packet filed 

 under Myriangenella tapirae Stevens & Weedon. 

 The fungus is a typical Phyllachora except that the spores are two- 

 celled. The stromata are quite uniform in size and in all sections studied 

 showed either three locules on one side of a leaf, (Figure 57) or 3 on each 



