106 NORFOLK MOSSES. LIVERWORTS, AND MYCETOZOA. 
Ptilidium ciliare (L.), Hampe. 27. Horsford, St. Faiths, 
Stratton Strawless. 28. Santon. 
A small, depressed form, growing on a 
birch tree at Stratton Strawless, with the 
appearance of Ptilidium pulcherrimum > 
proved to be an arboreal form of this species. 
Diplophyllum albicans, Linn. 28. Attleborough. 
*Scapania irrigua (Nees), Dum. 27. St. Faiths, Heving- 
ham. 
* ,, undulata (L.), Dum. 2 7. Beeston Regis. 
Radula complanata (L.), Dum. 28. Hargham, Attle- 
borough. 
Madotheca platyphylla (L.), Dum. 27. Upton. Flordon. 
28. Castle Acre. 
Frullania dilatata (L.), Dum. 28. Attleborough, Thet- 
ford, Weeting. 
Mycetozoa. 
(Supplemental to lists published in vol. i., p. 47, 1873; vol. iii., 
p. 741, and vol. vi., p. 449. Vouched by Miss Lister, F.L.S., or 
Mr. J. Saunders, A.L.S.). 
*Ceratiomyxa Mucida, Schrot. 27. Stratton Strawless. 
28. Weeting. 
*Badhamia panicea, Rost. 27. Dunston, Sheringham. 
*Physarum virescens, Ditm. 27. Stratton Strawless. 
*Amauroch.ete atra, Rost. 27. Sheringham. 
*Orcadella operculata, Wing. 27. Stratton Strawless. 
A group of these minute sporangia, averaging 
•9 x ’25 mm., was detected on Frullania 
dilatata, and other small bryophytes, on a 
Beech tree, in Nash’s Grove, in Dec., 1908. 
A microscopical examination suggested 
Orcadella as the genus, but the operculum 
with well defined line of dehiscence, figured 
and described in Lister’s monograph, was 
hardly distinguishable. Miss Lister was 
good enough to examine the gathering, and 
