598 



Ph. Ambrosias (B. & C.) 



Dothidea Ambrosice, B. & C. Grev. IV, p. ioy 

 Phyllachora A mbrosicn, Sacc. Syll. 5127. 



Stroma convex, shining. Asci linear, shorter than the slender 

 paraphyses. Sporidia uniseriate, elliptical, hyaline. 



On leaves of Ambrosia elatior, Carolina, and on A. artemisice- 

 folia, Alabama (Beaumont). 



D. Ambrosice, Schw. Syn. N. Am. 1935 (sec. Cke, Grev. XIII, 

 p. 43), is without fruit and not a Phyllachora. 



Ph. Lespedezse, (Schw.) 



Sphcetia LespedeZcz, Schw. Syn. N. Am. 1:488. 

 Phyllachora Lespedezce, Cke. Grev, XIII, p. 63. 

 Exsicc. EH. N. A. F. 487. 



Stromata gregarious or subconfluent, conic-convex, black and 

 shining-, about 1 mm. diam., epiphyllous, seated on indefinite, yellowish 

 spots. Ascigerous cells few (1-4), small, pale. Asci? Sporidia (sec 

 Cke. in Grev. XIII, p. 63) elliptical, continuous, hyaline, 20x10 p.. 



On leaves of various species of Lespedeza. Not uncommon, but 

 mostly sterile. 



Ph. Beaum6ntii, (B. & C.) Grev. XIII, p. 63. 



Epiphyllous. Stroma hemispheric-convex, opake, black, con- 

 tracted at base. Asci clavate. Sporidia inordinate, elliptical, con- 

 tinuous, hyaline, 8-10 x4 ju. 



On leaves of Cerasus, Alabama. 



Ph. picea, (B. & C.) 



Dothidea picea, B. & C. Grev. IV, p. 105. 

 Phyllachora picea, Sacc. Syll. 5129, Cke. Syn. 1073. 



Forming little orbicular, papillose patches. Asci short, clavate. 

 Sporidia hyaline, narrow, cymbaeform. 

 On twigs of Vitis aestivalis. 



Ph. tenuis, (B. & C.) 



1 Dothidea tenuis, B. & C. N. Pac. Expl. Exp. No. 162 

 Phyllachora tenuis, Sacc. Syll. 5114, Cke. Syn. 1077. 



Pitch-black. Stroma' subpenetrating, thin, minutely granulose 

 from the slightly prominent cells. Sporidia hyaline, oblong-clavate. 

 On leaves of Bauhinia, Nicaragua (Wright). 



Ph. incliisa, (B. & C.) 



Dothidea inclusa, B. & C. N. Pac. Expl. Exp. No. 164. 

 Phyllachora inclusa, Sacc. Syll. 5116, Cke. Syn. 1067. 



