36 PAKASITES BELONGING TO THE GENUS GLOMERELLA. 



The appearance of this fungus in cultures is quite characteristic 

 and remarkably uniform. The mycelium usually becomes dark 

 colored rather early in its growth and the acervuli quite constantly 

 produce an abundance of setae which occasionally bear conidia, 

 evidently indicating the derivation of the setse from ordinary conidio- 

 phores. The production of the perithecial form of this fungus was 

 first reported by the writers (75) in 1907 from the cultures described 

 above. Later, Edgerton (29), 1909, reported rinding the perithecial 

 form on cotton bolls in Louisiana and named the fungus Glomerella 

 gossypii. Since this fungus appears to possess certain morphological 

 characters both under natural conditions and in cultures sufficient to 

 separate it from its near relatives, it is apparently deserving of 

 specific rank. Cross-inoculation experiments also seem to sustain 

 this conclusion. An ascus and ascospores are shown in Plate I, 

 figures 12 and 12a. 



HEDYSCEPE SP. (PALM) 



Glomerella cingulata (Stonem.) S. and v. S. 



Acervuli and perithecia with ascospores agreeing in all essential 

 particulars with those of Glomerella as it occurs on other hosts were 

 found on leaves of this host in the Department greenhouse. No pure 

 cultures were obtained of this form. An ascus and ascospores from 

 this material are shown in Plate II, figures 26 and 26a. 



LIGUSTRUM VULGARE L. (PRIVET). 



Glomerella cingulata (Stonem.) S. and v. S. 

 Gloeosporium cingulatum Atk. 



DEVELOPMENT ON LEAVES AND STEMS IN MOIST CHAMBER. 



Diseased leaves and stems of privet sent from Digby, Nova Scotia, 

 and received September 30, showed fertile perithecia agreeing with 

 the description of Glomerella cingulata except that the measure- 

 ments of the ascospores were slightly less than those given by Stone- 

 man (89). A single acervulus bearing conidia of the usual form and 

 also showing a few setae was also found on a sunken light-brown spot 

 on one stem. This twig and others showing dark swollen points 

 suggesting immature acervuli or perithecia were placed in a sterile 

 moist chamber. 



On October 4 mature perithecia had developed on this material 

 and ascospores were oozing from the ostioles in light pinkish masses. 

 Conidia developed a little later on the leaves and stems also. Peri- 

 thecia also developed on the leaves in moist chamber. 



252 



