LIST OF NORFOLK MOSSES. 
221 
presenting certain characters indicating an approach to the rarer 
species. It is interesting in the taxonomic study of Mosses to 
find two forms so clearly uniting such apparently well-marked 
species as F. hygrometrica and F. microstoma. Attention should 
also bo called to the relation between the size of the spores and the 
development of the peristome which obtains here and finds an 
illustration in at least several other cases ; the size of the spores 
increasing as the development of the peristome decreases. Thus 
several of the varieties of Weisia viridula in which the peristome 
is poorly developed have markedly larger spores than in the type. 
In Bryum also, the species with most highly developed peristome 
(Eu-bryum), as a rule have much smaller spores than those of the 
sections Cladodium, etc., where a less highly organised peristome 
is almost always associated with a larger size of spores. The 
prevalence of large spores among the Cleistocarpous Mosses is 
a further example. 
MeESIACEjE. 
Amulyooon dkalisatus, Beauv. Munford records this from the 
North-Central Division. It was also recorded 
from Suffolk at an early date, by Eagle. 27. 
St. Faith’s Bogs (near Norwich), Mr. Crowe 
(O. B. G.). 
Aulacomnium palustre, Schwagr. 27 (Pag.). Holt (Holmes). 28. 
Dersingham, c. fr. (Bodger). 
Splachnace.e. 
Splachnum ampullaceum, L. 27. Munford records this plant 
from the Eastern, and from both districts of the 
Central Division. It is probably much less com- 
mon now than formerly. “ Geldeston Fen (Mr. 
Stowe),” (0. B. G.). 
Bartramiace.e. 
Bartramia pomiformis, Hedw. 27 (Burrell). 
Philonotis fontana, Brid. 27 (Burrell). Edgefield Heath, Holt, 
with a falcate-leaved form (Holmes). 
„ ccespitosa, Wils. 27. Holt. A very interesting 
plant sent by Mr. Holmes proved to be this 
species or sub-species. It is even more marked 
than some of Wilson’s own specimens in the 
