250 Transactions British Mycological Society. 



A visit to the sawpits in the Chatsworth grounds on October 

 26th resulted in several additions to our list, among them being 

 Lindbladia effusa found on sawdust, a species rare in England 

 but obtained in the same locality during the visit of our society 

 to Baslow in May, 1915. 



On September 27th the woods called "New Piece" in the 

 Chatsworth grounds were explored, when the most interesting 

 finds were Hemitrichia clavata, and the conspicuous red sporangia 

 of Arcyria Oerstedtii. 



Two of our members visited later Calton Wood, on the Bake- 

 well Road. Here, amongst other species, a small Comatricha was 

 obtained on dead wood, agreeing on the whole with C. elega7ts 

 in having the columella divided above to form the primary 

 branches of the capillitium. Some of the sporangia however 

 resemble C. nigra in having the columella unbranched and 

 tapering upwards. The two species are undoubtedly very closely 

 allied. Another interesting specimen was obtained by Mr Rea 

 in Cheedale. He found there on a plant of Mimulus Langsdorfii 

 growing in the river Wye a perfect development of Physarum 

 didermoides var. lividum; this w^ll-marked variety had only 

 been recorded before with certainty from the counties of 

 Bedfordshire, Buckinghamshire and Sussex, and always on old 

 straw. In the present gathering we have a new record for 

 Derbyshire and a new habitat for the species. As the plant 

 to which the sporangia were attached was completely surrounded 

 by running water we must infer that the plasmodium had 

 been living under water before it crept up the Mimulus stalk 

 to fruit. It is well known that a plasmodium can in special 

 cases become adapted to submerged conditions, and may 

 even thrive there, but such instances have rarely been met 

 with in the field. 



During the two previous forays at Baslow in September 1901 

 and May 1915, forty-four species of Mycetozoa were obtained 

 altogether; during our recent foray forty-five species were 

 collected, fifteen of which do not appear in the previous lists 

 and appear to be new records for Derbyshire; they are dis- 

 tinguished by an asterisk in the following list. 



B. refers to Baslow Woods, C. to Chatsworth, Ca. to Calton 

 Wood, G. to Grindleford, H. to Highlow Wood, P. to Padley 

 Wood, S. to Stoke Wood. 



Ceratiomyxa fruticulosa (Miill.) Macbr., B. 



Physarum nutans Pers., B., C, H., subsp. leucocephalum 



Lister, B. 

 P. viride (Bull.) Pers., H., Ca. 

 *P. psittacinum Ditmar., C. 



