STUDIES OF GLOMEEELLA FROM DIFFERENT HOSTS. 47 



usual growth of mycelium; and on April 3 an abundance of perithecia 

 with mature asci were present, but no conidia were seen. 



This is the only case in the writers' experience with these organisms 

 in which cultures made from ascospores have apparently produced 

 no conidia or if they were formed they were so few in number that 

 they escaped observation. It does not appear, however, that there 

 can be any doubt about these perithecia belonging to the bean an- 

 thracnose. The cultures were originally started from the conidial 

 form on a bean pod and conidia were found in the first cultures with 

 the perithecia. The perithecia, asci, and all the morphological char- 

 acters of the fungus agree with Glomerella, as will be observed by 

 comparing Plate I, figures 13 and 13a, and also the measurements of 

 conidia and ascospores. The fact that conidia were few in the original 

 culture and wanting in others apparently shows only an extreme 

 variation in this particular, as cultures from different hosts have 

 shown a great degree of variability in respect to the relative abund- 

 ance of the different spore forms in any race or strain, and there seems 

 to be a general tendency on the part of cultures from ascospores to 

 produce fewer conidia than do those which originate from conidia. 

 In the case of the form from the gooseberry (Ribes oxyacanthoides) , 

 described later, the predominance of perithecia was also very striking. 

 Conidia, though present, were usually scattered or formed minute 

 acervuli which were very inconspicuous and easily overlooked, 

 whereas the perithecia were produced in great numbers and were very 

 conspicuous. 



In one other series of cultures from conidia from a bean a few small 

 peritheciumlike bodies were found at the edge of the culture, but no 

 asci or ascospores were obtained. 



The appearance and behavior of this organism in cultures, as well 

 as the failure of cross-inoculation experiments, apparently shows it to 

 possess sufficiently well-marked characteristics to justify its separa- 

 tion as a distinct species, though the perithecial form taken alone 

 could be distinguished with great difficulty, if at all, from that ob- 

 tained from other hosts. It is tentatively named Glomerella linde- 

 mutJiianum Shear. 



PHORMIUM TEN AX FORST. 



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

 fPhysalospora phormi Schrot. 



On April 1 slant agar tubes were inoculated by transfer of spores 

 from an acervulus of Gloeosporium on a leaf of Phormium from the 

 greenhouse. The growth in these tubes had the same general appear- 

 ance as that of most other forms of this species grown from other 

 hosts. A few acervuli formed with pinkish masses of conidia. Peri- 

 theciumlike bodies were numerous in the cultures, but no asci could 



252 



