18 



Mycologia 



centro griseolis; conidiophoris dense aggregates, 15/x longis; 

 conidiis cylindraceis, leniter clavatis, fumagineis, 3-4-septatis, 

 45-54 X 4-5 



On Bumelia lanuginosa Pers. Luling, 2222 (type) ; Flatonia, 

 2742. 



This disease first appears as indefinite margined, dark-brown 

 spots on the upper surface of the living leaf. At length these 

 areas become irregular in outline with a definite brown margin 

 and a grayish center. Owing to the woolly coating on the lower 

 surface, the leaf spots show through only faintly as brown areas. 

 Scattered over the upper surface of the spot are very dense 

 clusters of conidiophores. 



Cercospora Lythracearum 



Amphigenis; maculis subcircularibus, indefinite marginatis, 

 superne atro-brunneis, zona flava limitatis, inferne flavo-brunneis, 

 2-8 mm. diam. ; conidiophoris dense aggregatis, pallide brunneis, 

 plerumque epiphyllis, continuis, 15-30 X 3/^; conidiis clavatis vel 

 subcylindraceis, subhyalinis, 30-56 X 3—3.5 2-5-septatis. 



On Lagerstroemia indica L. Austin, 466 (type). On Punica 

 Granatum L. Beeville, 1829; Victoria, 2310, 2313; Cuero, 2589; 

 Flatonia, 2738; Falfurrias, 24/2. 



On the crape myrtle, circular to subcircular, indefinite margined 

 areas appear on the foliage. These spots are uniformly yellow- 

 ish-brown below and dark-brown above, with a limiting zone of 

 yellow tissue paling out into the green. On the pomegranate, this 

 fungus produces angular, more or less rounded brown spots with 

 an indefinite margin below. 



Cercospora macromaculans 



Amphigenis; areis magnis 1 cm. lat., brunneis arescentibus, plus 

 minusve irregularibus, centro griseolis, saepe zonatis ; conidio- 

 phoris dense aggregatis, septatis, atro-brunneis, 60-75 X 6 /z ; 

 conidiis clavatis apice gradatim attenuatis, septatis, subhyalinis, 

 70-187 X 2.8-3 . 



On Syringa sp. Kerrville, 1603 (type) ; Austin, 463, ipio. 



This blight is characterized by the presence of large brown, 

 dead patches, which are more or less irregular and either central 

 or marginal. The center of the spots is frequently gray, and 



