164 THE ESSEX NATURALIST.
In the absence of Miss Lister, who had been advised to return home
earlier, the Hon. Secretary reported on the mycetozoa recorded during
the Foray, twenty-two distinct species having been collected, including
Ceratiomyxa fruticosa, Reticularia Lycoperdon (normally a Spring form),
Lamproderma scintillans and Dictydium cancellatum. This was a very
good yield.
The President proposed the best thanks of the meeting to the several
referees for their services; these were accorded by acclamation and the
meeting then terminated.
Mr. Pearson has since sent in the following report on the results of the
Foray:—
Epping Forest was unexpectedly bare of fungi, at least this was so
under the trees, where the larger species are to be found usually. In
the more open grassy places the small things were fairly plentiful. For
instance, Mycena avenacea was to be found in great abundance. This
very common Mycena is often unnoticed. It was recorded originally for
Britain as Mycena olivaceo-marginata, Massee, and only in recent years
has it been given its Friesian name.
Altogether 119 species were observed, which include four new records
for the forest:
Mycena lineata (Bull) Fr.
Tubaria autochtona (B. & Br.) W.G.S.
Psilocybe atrorufa (Schaeff.) Fr.
Corticium vellereum Ellis and Cragin.
Among the specimens that collectors placed on the table was a small
specimen of the rather rare Hydnum cirrhatum, which has not turned up
at this Foray for many years.
Miss Lister contributes the following note on some of the more inter-
esting myxomycetes found during the Foray:—
Ceratiomyxa fruticulosa was found on three different kinds of wood,
fir, hornbeam and beech, as also was Dictydium cancellatum; the latter
species usually, but by no means always, occurs on coniferous wood.
The specimen of Arcyria pomiformis from High Beach is interesting on
account of the markings of the capillitium threads, close to their attach-
ment to the sporangial cup, consisting of three to four spiral bands, a
character met with in the recently described A. pomiformis var. heterospora
G. Lister from Japan (Journal of Botany, Aug., 1933, 221); this variety
is, however, chiefly distinguished by the larger rougher spores, 9 to 10μ
diam.; the spores in the High Beach gathering are typical, being 8μ
diam. and smooth except for a few scattered warts. Usually spiral bands
do not occur on the capillitium of species of Arcyria, but they are present
more or less distinctly in A. stipata. Such species show an approach to
the genus Hemitrichia, in which, however, spiral markings form the
characteristic feature of the capillitium.