12 MYCETOZOA OBSERVED AT THE FUNGUS FORAY, I902. 



present time. The}' are looking for help from science to assist 

 them in their practical work. Whilst doctors are at work over 

 microbes in their laboratories, in order to unveil the mysteries of 

 human disease and alleviate liuman suffering, the vegetable 

 pathologist should also be equally earnest in searching out the 

 mysteries of plant diseases, so as to ease the mind and replenish 

 the pockets of the cultivator. 



MYCETOZOA OBSERVED AT THE FUNGUS 



FORAY, 1902. 



By ARTHUR LISTER, F.R.S., F.L.S. 



THE Field Club's ramble on October i8th did not yield so 

 rich a harvest of Mycetozoa as on some previous 

 occasion'. The season has not been favourable for them, and 

 only 12 species were obtained, viz. : — 



Badhamia utricularis, Berk. 

 Physarum nutans, Pers. 



,, virnum, Somm. 



Fuligo septica, Gmelin. 

 Leocarpus vernicosus, Link. 

 . Didymium nigripes, Fr. 

 Comatricha obtusata, Preuss. 

 ,, persoonii, Rost. 



Trichia varia, Pers. 



,, scabra, Kost. 

 Arcyria punicea, Pers. 

 Lycogala miniatum, Pers. 



Steveum liivsutnm has spread in large patches on many of the 

 felled hornbeams, and almost always where this was the case 

 the Plasmodium oi Badhamia utyiculavis was advancing in orano-e- 

 ooloured veins, devouring the fungus ^ ; the ripe fruit was only 

 found in two or three instances. The other Mycetozoa met 

 with were common species, and need no comment. 



1 Consult ^rl•. Lister's paper " Practical Hints on the Study of the Mvcetozoa. with notes 

 on the Lppnii^ horest species," in Esskx Nat., vol. x., pp. 23— 27.— Ed. ' 



2 See note on plasmodia stage of Badhamia in Journal of Proccedins:s E F C, vol iv d 

 clxxni. " . , . . ^. 



