118 



Mycologia 



Napicladium prosopodium sp. nov. 



Spots amphigenous, circular to orbicular, 1-2 mm. in diameter, 

 light brown except where dense covering of conidiophores and 

 conidia gives a dark-brown cast; conidiophores amphigenous, 

 appearing first on upper surface, fasciculate, arising from a 

 tubercular base which extends into subepidermal tissue, very 

 strongly geniculate, often with very short branches at genicula- 

 tions, septate, slightly spreading, typically light-brown but varying 

 somewhat in shade of color, 20-40 X 8-10 conidia light-brown 

 when young, darker with age, spindle form, 3-8-septate, 50-80 X 

 12-15 /*> basal and apical cells of mature conidia noticeably lighter 

 in color than other cells, apical cell nipple-shaped at terminal end, 

 basal cell truncate-conic. 



On living leaves of Prosopis glandulosa Ton*., Austin, Texas, 

 Nov. 10, 1914, /. M. Lewis & B. C. Tharp. Associated occa- 

 sionally with Cercospora prosopodis H. & W., but frequently 

 occurring alone, at which time only it produces the characteristic 

 spots described above. The brown spots produced by C. proso- 

 podis are much larger, and much lighter and duller in color than 

 those of N. prosopodium and in other respects have nothing of 

 the appearance of the spots produced by N. prosopodium. 



Phleospora pteleae sp. nov. 



Spots amphigenous usually having a punctiform, white center 

 surrounded by a zone of dark-brown dead tissue, in turn sur- 

 rounded by a conspicuous yellow zone shading into normal green, 

 brown portions irregularly circular, 0.5-2 mm. across; pycnidia 

 hypophyllous, 45-60 /jl in diameter ; spores curved, hyaline, 30- 

 50X3-4/*, 3-7-septate. 



On living leaves of Ptelea trifoliata L., Austin, Texas, Oct. 23, 

 191 5, B. C. Tharp. 



Phyllachora texana sp. nov. 



Stromata variable in size from minutely punctiform to more 

 than 1 mm. in diameter, circular in outline, or by confluence 

 irregularly lobed, typically extending through leaf and showing 

 on both surfaces; perithecia reduced to ascigerous loculae (one 

 or more contained in each stroma), opening through ostiola on 

 one leaf surface only, or on both surfaces ; asci paraphysate, 

 clavate, 50-80 X 10-14 /x; spores typically 8 in each ascus, uni- 



