144 Transactions British Mycological Society. 



in the rootstock and the spore capsule is produced in the lower 

 portion of the bulbil. The columella only extends half-way 

 through the capsule and in this way differs markedly from 

 5. Hydropiperis, while the spores are slightly smaller than those 

 of the latter species. The name S. infiorescentiae Trel. is prior 

 to S. Polygoni-vivipari Schellenberg. 



Thecaphora Lathyri Kiihn. 



In the seeds of Lathyrus pratensis L. collected by Dr M. 

 Drummond near Edinburgh, Sept. 1923. 



Not previously recorded as British but found on the continent. 

 The pods containing infected seeds become dark-coloured 

 slightly earlier than the healthy ones. The spores are powdery 

 and escape on dehiscence of the pods. 



I desire to record my thanks to all those who have supplied 

 me with specimens and especially to Mr J. Ramsbottom for 

 help and advice. 



OBSERVATIONS ON CAMAROSPORIUM 

 ABIETIS n. sp. 



(With Plates III and IV.) 



By Malcolm Wilson, D.Sc, Reader in Mycology, University of 

 Edinburgh, and Redvers B. Anderson, B.Sc. {For.). 



This fungus was collected March 3rd, 1923, at Arniston, 

 Midlothian, on a soUtary tree of Abies Lowiana, Murr. 



One or two lateral branches were noticed to be destitute of 

 leaves, and on closer examination were found to bear a large 

 number of black fructifications scattered irregularly all over the 

 branchlets. Such branches were low down and well shaded. 



The fructifications vary widely in size from -5 to i-i mm in 

 diameter and at times are closely aggregated, as when they 

 occupy the pulvinar scars or occur within the axils of lateral 

 branches, in the latter case often numbering forty to fifty on an 

 area of 1*5 cm. diameter. Close aggregation of this kind is more 

 noticeable on older branchlets, where the fungus is undoubtedly 

 saprophytic; in the case of young current-year lateral shoots 

 the fructifications are much less numerous and occupy, for the 

 most part, the old leaf scars. 



No signs of infection of the main trunk are seen, nor do the 

 fructifications occur close to it. 



The youngest fructifications found had already broken through 

 the outer layers of the bark, in the majority of cases one only 

 to each such ruptured area, but in one or two instances a number 

 occurred close together and seemed to arise from a common 

 stroma. When collected they were sooty black in colour, more 



