Heald-Wolf: New Species of Texas Fungi 



7 



1833; Sabinal, 1976; Hondo, 1998; Bastrop, 2021 ; Seguin, 2303; 

 Georgetown, 2390; Gonzales, 2654; Kennedy, 2825. 



This leaf blight is very general and very severe. The foliage 

 comes to have large, irregular, brown areas, generally beginning 

 on the leaf tips. The entire leaf becomes dry, brown, and more 

 or less curled in the advanced stages of the disease. 



Phyllosticta biformis 



Maculis orbicularibus, 2-5 mm. lat., griseis, atro-marginis ; 

 pycnidiis in foliis globosis ac in fructibus lenticularibus ostio- 

 latis, 150/x diam. Sporulis copiosis, granuloso farctis, hyalinis, 



6-9 fX. 



On Diospyros texana Scheele. Llano, 1789; Austin, 1548, 

 2896 {type). 



The Mexican persimmon is affected by this fungus, which pro- 

 duces black pycnidia in clusters upon the upper surface of the 

 leaves. At first they are surrounded by the green tissue but 

 later a dark-margined spot 2-5 mm. in diameter is formed, which 

 is grayish, with the black pycnidia distinctly visible. The 

 pycnidia show on the fruit as minute pustules on slightly sunken 

 spots, but are not very evident on account of the dark color of 

 the fruit. 



The pycnidia on the leaves are globose, ostiolate, and produce 

 an abundance of hyaline, densely granular spores; the pycnidia 

 on the fruit are much more flattened, and are covered by the very 

 thick epidermal wall, but contain spores similar to those on the 

 leaf except that they are dilutely brown in color. 



Phyllosticta bumeliifolia 



Maculis solitariis saepe confluentibus definitis, pallide brunneis, 

 inferne pallidioribus, 3-6 mm. diam. ; pycnidiis innatis, epiphyllis, 

 nigris, 125-150^; sporulis globosis, granulosis, guttulatis, 9—1 5 /x 

 diam. 



On Bumelia lanuginosa Pers. Austin, 1549 {type), 3032. 



This fungus causes the formation of pale-brown spots on the 

 living leaves. These spots vary in diameter from 3-6 mm. when 

 circular or subcircular, but often the areas have fused so that 

 much larger irregular spots are produced. The color is less 



