128 THE ESSEX NATURALIST.
The nomenclature of the discomycetes is that of E. Boudier which has
been adopted by British mycologists.1
In addition to the above, the following species were met with, and con-
stitute new records for Epping Forest.
Russula punctata (Gillet) R. Maire.
Marasmius obtusifolius Rea. n.sp.
Psalliota haemorrhoidaria Kalchbr.
Corticium confine Bourdot et Galzin.
Corticium sulphureum (Pers. non Fr.) Bres (=Phlebia vaga Fr.)
Hypochnus fuscus (Pers.) Karst.
Hypochnus rubiginosus Bres.
The Marasmius obtusifolius recorded above is new to science. It
was found by Mr. C. H. Grinling, M.A., at the base of an old Hornbeam.
At first sight it suggested Collybia vertirugis (=Marasmius undatus) but a
more careful inspection showed very distinctive characters, chief of which
were the projecting cystidia, easily seen on the blunt gills with a
lens; also the large ovate guttulata spores. A specimen was sent to Mr.
Carleton Rea, who will describe it fully with the usual Latin diagnosis
in the transactions of the British Mycological Society. Meanwhile the
following description may be given:—
Marasmius obtusifolius Rea;
Pileus 1-2 cm. white with tawny centre, membranous, rather flat 
smooth, grooved; margin at first involute.
Stem 2-4 cm. long. 1mm. thick, tawny with apex white, solid,
velvety.
Gills pale, adnate, anastomosing near stem to form a ring 2mm. wide,
distant, equal, very obtuse and thick, the edge under lens bristling with
cystidia.
Flesh white, thin, without smell or taste.
Spores hyaline, broadly ovate, 14-15 x 10-12μ. guttulate.
Cystidia numerous, fusoid-ventricose. 95-145 x 17-25μ., with
globular apex 14-18μ. Cuticle of the pileus with sub-globose or
pyriform cells 20-23μ dia.
Miss G. Lister, F.L.S., reports on the Mycetozoa as follows:—
The route taken, through the Birch Hall woods, across the forest
by the Furze Grounds, the Keeper's Cottage, and Monk Wood to High
Beach, afforded a varied hunting ground. Part of the Chingford
forest was also searched with good results by Mr. Ross in the early morning,
before he joined the main party at Theydon. The previous fortnight had
been very dry, yet, thanks to the brilliant day and the efforts of many
collectors, twenty-three species of Mycetozoa were found, whose names
are given in the following list.
Physarum nutans Pers.
P. bitectum Lister. One sporangium only on a dead leaf.
Fuligo septica (L.) Gmel. In immature condition and also old and
weathered.
1 Mr. J. Ramsbottom has drawn up an excellent list of the new names; see Transactions
of the British Myeologial Society, 1913.