Distribution of Bryophytes in Somerset Woodlands. 93 
thecium undulatum, Hypnum Schreberi, Pellia epiphylla, Nardia 
scalaris , Lophozia ventricosa, Lophocolea bidentata, Kantia Sprengelii, 
Diplophyllum albicans, Scapania compacta and Frullania dilatata. 
(5). The following species are characteristic of the oak-hazel 
woods:— Fissidens taxifolius, F. bryoides, Mnium undulatum (sub¬ 
dominant), Brachy thecium rutabulum (dominant), Eurynchium 
prcelongum (sub-dominant), Web era carnea, Mnium stellare, Brachy- 
thecium rivulare, B. velutinum, Eurynchium myurum, E. rusciforme, 
Amblystegium flicinum, Hypnum riparium, H. commutation, Cono- 
cephalum conicum, Lunularia cruciata, Pellia endivicefolia, Kantia 
Trichomanis, and Radula complanata. 
Most of these species are also common in the damper ash- 
woods and in the woods intermediate between the ash-type and the 
oak-hazel form. 
(6.) In the beech-woods there are comparatively few bryo¬ 
phytes, the chief forms being Fissidens taxifolius, F. bryoides, Mnium 
undulatum, Brachythecium rutabulum, Eurynchium prcelongum, 
Hypnum cupressiforme with its varieties resupinatum and ericetorum, 
and Frullania dilatata, the latter being sub-dominant. 
(7) . The mixed woods vary to a large extent, but their bryo¬ 
phytes are generally similar to those of the oak-hazel association. 
(8) . Where pines are common in the oak-woods, the various 
species of Polytrichum, Tetraphis pellucida, Leucobryum glaucum, 
Aulacomnium androgynam, Campylopus fragilis, C. pyriformis, Plagio- 
thecium undulatum, Diplophyllum albicans, Nardia scalaris, Scapania 
ventricosa, and S. compacta become more abundant. 
(9) . Many species which are absent or infrequent in ash and 
oak-hazel are common in the oak-woods. 
The following list does not pretend to be a complete repre¬ 
sentation of bryophytic distribution in the woods, as so many minute 
species are liable to be overlooked. The plan adopted is the same 
as that in the “ Geographical Distribution of Vegetation in Somerset,’’ 
the letters in the various columns denoting the frequency, d=domi- 
nant, s=sub-dominant, a=abundant, o=occasional, r=infrequent 
or rare, vr=very rare, — ^absent. 
Oak. 
Oak . . 
Hazel. Ash - 
Sphagnum subsecundum, Nees. 
... 
O 
r — 
Tetraphis pellucida, Hedw. 
... 
O 
vr vr 
Catharinea undulata, W. and M. ... 
•... 
s 
a a 
Poly trichum aloides, Hedw. 
... 
a 
— — 
„ piliferum, Schreb. 
... 
a 
— — 
