200 THE JOURNAL OF BOTANY 



Mycetozoa. The unusually heavy rainfall experienced last August, 

 after a somewhat long period of drought, caused the sporangia to 

 appear in great profusion. During the eight weeks (July and 

 August, 1915) which I spent in the Lynton district I obtained 

 fifty-six species and have no doubt that this preliminary list could 

 be greatly increased if any local botanist would take an interest in 

 the group. The similarity of my list wdth those species found by 

 Dr. Adams in Cornwall is interesting, notably as regards the 

 occurrence of Physarum mtcleatum Eex in both districts and the 

 rarity of Comatricha typJioides Eost. in the West of England. 

 Several species which were common about Lynton appear to be 

 very uncommon in most parts of the country, but until more local 

 lists are published it is difficult to ascertain their true range of 

 distribution. 



I am greatly indebted to Miss Gulielma Lister, F.L.S., for her 

 kindness in verifying or correcting all my determinations. 



The list of Mycetozoa in The Victoria County History of Devon 

 mentions only thirty-four species ; those on my list which are not 

 there mentioned are marked with an asterisk '". 



Ceratiomyxa fruticulosa Macbr. Very abundant in July, 

 becoming scarcer in August. 



Badliamia utricularis Berk. An old development in Lee 

 Woods. 



■''Physarum 2^sittacinicm Ditm. Three large gatherings on 

 rotten logs in Lee Woods in August. 



■'P. viride Pers. Common on stumps. 



''•p. nucleatum Eex. On an old stump in West Lyn valley. 

 This is the second British gathering, it having been found by Dr. 

 Adams in Cornwall in 1911. It is recorded from Japan, Java, 

 Borneo, West Indies and U.S.A. 



P. 7iutans Pers. Abundant everywhere. — Subsp. leucoijhmum 

 Lister. Lee Woods and West Lyn valley. 



P. cinereum Pers. Lee Woods. 



P. sinuosum Weinm. Lynbridge and Wringchff Wood. 



■'~P. hitectum Lister. Woody Bay Woods. 



"P. concjlomeratum Eost. A small development on dead holly- 

 leaf in Lee Woods. 



Fulicjo sejjtica Gmelin. Common everywhere. 



Crateriiim mimitum Fries. Abundant on sticks and straw 

 everywhere. 



"-■'C. leucocephalum Ditm. Eather scarce. Wringchff Wood. 



■'C. aureum Eost. Plentiful on straw and dead gorse in 

 Wringcliff wood and Woody Bay Woods. 



Leocarjncs fragilis Eost. Eather common in Lee Woods. 



Didenna hemisi^hericum Hornem. Lee Woods and Lady- 

 well. 



■'D. effusum Morgan. Lee Woods and W. Lyn valley. 



■'•D. floriforme Pers. Three large gatherings amongst oak logs 

 and leaves in Lee Woods. An extremely pretty species, which has 

 only been obtained in a few English localities. 



Didymium difforme Daby. Plentiful on decaying vegetation. 



