THE ESSEX FIELD CLUB. 
I98 
Monk Wood. Among the lichens, Mr. Paulson discovered' Trachylia 
stigonella growing parasitically upon the thallus of another lichen 
(Pertusaria) on an oak trunk near the Wake Valley ponds ; and Mr. Percy 
Thompson found Thelotrema lepadinum growing on a felled hornbeam 
trunk by the Green Ride, near to Great Monk Wood. 
At the Meeting at the Roserville Retreat, which followed tea, interesting 
remarks on the results of the day s search were made by the referees, and 
the thanks of those present was accorded to them. 
Miss Hibbert-Ware contributes the following notes on the Myxomycetes 
found during the day and on the occasion of the Club’s Fungus Foray on 
■28th October : — 
NOTES ON THE MYCETOZOA COLLECTED ON THE EPPING 
FOREST FUNGUS AND CRYPTOGAMIC FORAYS IN 1916. 
These Forays took place on 14th October and nth November re¬ 
spectively,and the ground worked was, in each case, that between Loughton 
-and High Beach. 
On 14th October, it was found that the alternate wet and fine weather 
of the preceding weeks had been extremely favourable to the development 
•of Mycetozoa. The list for the day included 22 species—a good record 
when it is remembered that the students of this group were deprived, 
on account of illness, of the guidance of their specialist leader, Miss G. 
Lister, F.L.S. 
The notable finds of the day were Craterium aureum (till quite recently 
unrecorded for the Forest) and Fuligo muscorum. The latter species 
had occurred near Theydon Bois in great abundance some years before. 
This was its .second record for Epping Forest, and it was found in masses, 
both as apricot-coloured plasmodium, and also as grey ash-like aethalia 
on the stalks of bracken fern. 
On nth November, 16 species were collected. Perhaps the rarest 
among them was Physarum virescens var. obscurum. This was found 
spreading in yellow plasmodium over dead leaves and developed into 
sporangia on the homeward journey. It had only once before been 
recorded for the Forest. Arcyria ferruginea was gathered in coral-pink 
immature sporangia. The yellow plasmodium of Badhamia utricular is , 
in fan-like masses, covered several feet of the surface of two tree-stumps. 
The combined lists include 26 species of mycetozoa :— 
Ceratiomyxa fruticulosa Macbr. 14th Oct. 
Badhamia panicea Rost. 14th Oct. 
Badhamia utricularis Berk, nth Nov. 
Physarum nutans Pers. Both dates. 
Physarum virescens Bitm. var. obscurum Lister, nth Nov. 
Fuligo septica Gmelin. Both dates. 
Fuligo muscorum Alb. and Schw. 14th Oct. 
Craterium minutum Fries. Both dates. 
Craterium aureum Rost. 14th Oct. 
Colloderma oculatum G. Lister. Both dates. 
Didymium squamulosum Fries. Both dates. 
Didymium nigripes Fr. Both dates. 
Comatricha nigra Schroeter. Both dates. 
