116 



Mycologia 



covering both yellow margins and brown centers, smoky-brown, 

 pluriseptate, subtortulose, often decidedly branched, 40-90 X 5m; 

 conidia yellow, obclavate to spindle form, pluriseptate strongly 

 vacuolate 40-75 X 4.5-5 (usually 50-60 X 4.5-5 /*)• (Clearly 

 different from C. nigricans Cke. and Ramularis cassiaecola (E. & 

 E.) H. & W. with the latter of which it was compared. 



On living leaves of Cassia tora L., Palestine, Texas, Oct. 30, 

 1914, /. M. Lewis & B. C. Thorp. 



Colletotrichum cinnamomi sp. nov. 



Spots amphigenous, much longer than broad and running 

 lengthways of the leaves, usually limited by main veinlets, black 

 at first, later becoming ashen-gray with black borders above, uni- 

 formly grayish-brown below; 1-1.2 X 2-6 cm.; acervuli hypoph- 

 yllous, 90-130^ in diameter, setae abundant, dark-brown, septate, 

 40-60 X 3-4 conidiophores hyaline, ovate 10-14 X 3-4/*; 

 conidia hyaline, linear-ovate, 12-16 X 3-4 



On living leaves of Cinnamomum zeylanicum Nees, Alvin, 

 Texas, Sept. 13, 191 5, B. C Tharp. 



Coniothyrium rhois sp. nov. 



Spots deep-brown, angular to orbicular, central or marginal, 

 2-10 mm. in diameter; pycnidia appearing only on older spots, 

 hypophyllous, immersed, at length erumpent, brown, spherical to 

 depressed globose, 70-165 jx in diameter; ostiole large (sometimes 

 50 /x in diameter) ; conidiophores obsolete; conidia at first hyaline, 

 at maturity deep-brown, ovoid, 5-10 X 3-6 



On living leaves of Rhus virens Lindl., Austin, Texas, Feb. 

 15, 1916, 5. C. Tharp. 



Coniothyrium ulmi sp. nov. 



Spots amphigenous, whitish, angular, 0.5-3 mm - m diameter, 

 profuse over entire leaf surface; pycnidia epiphyllous, subepi- 

 dermal in origin, at length erumpent, black around ostiole, shad- 

 ing into brown below, globose, 90-125 ^ in diameter; ostiole with- 

 out papillae ; conidiophores obsolete ; conidia brown, ovate, 2- 

 2.5 X4-6> 



On living leaves of Ulmus campestris Smith, Bonham, Texas, 

 Aug. 21, 1 91 6. (Submitted for diagnosis by a nurseryman.) 



