268 
THE ESSEX FIELD CLUB. 
are Mycena adonis and Boletus castaneus. This latter species was rather 
common this year, but in most years it is not frequent." 
Miss Lister reports as follows :— 
MYCETOZOA FOi ND ON THE OCCASION OF THE CLUB'S 
FUNGUS FORAY, 20 OCTOBER 1917. 
A considerable amount of rain had fallen on the previous day, which 
had probably washed away delicate specimens, and no very showy develop¬ 
ments of Mycetozoa were met with, but the diligent search of a number 
of keen hunters resulted in twenty-six species being found. Two ot 
these had not been recorded previously for Essex. The following is 
a list of the species obtained.— 
Badhamia utricular is (Bull.) Berk.—Seen in plasmodium " stage only. 
Physarum nutans Pers.—Found in old and young condition, both, 
the typical form and var. leucophceum. 
Fuligo septica Gmel. var. Candida. —One mouldy aethalium only of 
this species, which is abundant in the summer, was found, and that was 
of the white form, which is far less common than the yellow. 
F. cinerea (Schw.) Morg. var ecorticata. —This occurred on a heap of 
dead leaves and twigs under a birch tree ; it was emerging as an irregular 
mass of white plasmodium and looked rather like torn bread-crumb. 
After a few days’ nursing indoors, it developed into an inconspicuous 
purplish-grey aethalium, entirely without cortex, and with the fragile 
sporangium walls free from all deposits of lime granules, which are, 
however, abundant in the large branching lime-knots ; the spores are 
globose, 9 to io M diam. This variety has only once before been re¬ 
corded for Essex. The typical form, in which the aethalia are clothed 
with a smooth white cortex and the spores are oval, was found for the 
first time in the county last August, when Miss Hibbert-Ware obtained 
it on old straw at the base of a haystack near Theydon. Elsewhere 
in Britain, the typical form has been recorded from Buckinghamshire, 
Bedfordshire (where it was very abundant in the early autumn of some 
years on straw heaps), Somerset, and Cheshire ; the only other British 
records of the var. ecorticata are from Berkshire, Warwickshire, Elgin¬ 
shire, and Nairnshire. 
Craterium minutum (Leers) Fries.—One group only found on a holly 
leaf. 
Leocarpus fragilis (Dicks.) Rost.—Found on twigs, grass-stalks, and 
dead leaves. 
Diderma fioriforme Pers.— A fine development of this infrequent 
species was obtained by Mr. Ross on a log in the Chingford forest. 
D. effusum (Schw.) Morg.—On holly leaves. 
D. deplanaium Fries.—A group of the curious C- and S-shaped plas- 
modiocarps was found scattered over a leaf under a holly tree. When 
first found, they were immature ; but, after being kept moist for several 
days, they developed the characteristic orange-brown inner sporangium- 
walls and dark warted capillitium threads. This is the first record of 
the species for Essex. In the British Museum Catalogue, it is placed as. 
a variety of D. niveum (Rost.) Macbr., to which it is closely allied. Typical 
D. niveum has, however, crowded hemispherical sporangia, and is an 
