THE ESSEX FIELD CLUB. 263
The following is a full list of the species recorded :—
Badhamia utricularis (Bull.) Berk. Found in immature yellow sporan-
gium. It is unusual for none of the yellow plasmodium to have
been seen, especially as its favourite food, Stereum hirsutum, was
very abundant.
Physarum nutans Pers, and its var. robustum.
P. psittacinum Ditmar.
Fuligo septica (L.) Gmel. : weathered aethalia found.
Colloderma oculatum (Lippert) G. Lister. On living bark.
Stemonitis fusca Roth.
Comatricha nigra (Pers.) Schroeter. Only mouldy sporangia seen.
Cribraria rufa (Roth.) Rost. On oak. This is the second time this
species has been recorded from Epping Forest. It was in perfect
condition, with bright orange-red sporangia on black stalks. Its
usual habitat is coniferous wood.
Diclydiaethalium plumbeum (Schum.) Rost. Several aethalia were
found, chiefly in the immature rosy stage.
Trichia verrucosa Berk. On dead wood.
T. affinis De Bary.
T. varia Pers.
T. decipiens (Pers.) Macbr. Found as young rising red sporangia.
T. Botrytis Pers.
Arcyria cinerea (Bull.) Pers.
A. pomiformis (Leers) Rost. On fallen oak wood.
A. denudata (L.) Wettst.
A. ferruginea Sauter. Found several times : this is an autumn or
winter fruiting species.
Mr. Ross remarked that Trichia verrucosa, which had been found
that day by Miss Greaves, had only been recorded once or twice before
from Epping Forest.
Mr. Sherrin's list of mosses noted during the day amounted to 49
species, which, he thought, was probably a record total for our Forays.
Some of the more notable forms were Bartramia pomiformis, Barbula
rubella, B. revoluta, B. vinealis, Fontinalis antipyretica, Hypnum aduncum,
Eurhynchium tenellum and E. murale.
Mr. Thorrington reported a total of 13 hepatics, which included
Ricciocarpus natans and Ptilidium pulcherrimum. Of ferns, which are
always of rare occurrence in our Forest, four species had been noted,
namely, Pteridium aquilinum, Dryopteris aristata, D. filix-mas and Phyllitis
scolopendrium.
Mr. Thompson had noted 26 forms of lichens during the day, some
of the more notable being Lecanora (Squamaria) muralis and Physcia
caesia, both of which were growing on brick walls at Theydon station,
Cetraria glauca, Cetraria aculeata, Physcia orbicularis, var. virella, Cladonia
digitata and Baeomyces roseus. Mr. Thompson referred to Lecideas
granulosa and uliginosa, soil-lichens which colonise damp patches of bare
ground in the Forest, as illustrations of the more rapid growth of certain
lichens than had been admitted in the older text-books.
Thanks to the conductors brought the meeting to a close ; the usual
enjoyable walk along the darkened Forest roads back to Loughton was a
pleasant finale to an interesting day in the woods.