Edgerton : New Balansia on Cyperus 261 



short narrow, crowded conidiophores on the white immature 

 sclerotia, straight or sHghtly curved, long, narrow, sharp pointed, 

 hyaHne, 15-30 X 1-1.8 /x. Perithecia flask shaped with a some- 

 what thickened elongate neck extending to the surface of the 

 sclerotium, 480-600 X 1 20-200 //,. Asci long, narrow, usually 

 straight but sometimes curved, 160-225 X 7-10 /x. Ascospores 

 long, narrow, hyaline, septate, 10Q-200 X i-S-^/x. 



In fruiting parts of Cyperus virens, St. Gabriel, Louisiana, 

 August 16, 1917, collected by A. T. Bell and C. W. Edgerton. 



Type material in Herbarium of the New York Botanical Gar- 

 den. Specimens also in Bureau of Plant Industry collections, 

 Washington, D. C. 



Louisiana Agricultural Experiment Station, 

 Baton Rouge, La. 



Explanation of Plate 12 



Balansia cyperi on Cyperus virens 



Fig. I. Young immature sclerotia with conidial stage. 



Fig. 2. Older stage of sclerotia. 



Fig. 3. Mature sclerotia with perithecial stage. 



Fig. 4. Mature sclerotium with rudimentary spikelets of the host plant. 



