176 MERIONETHSHIRE MOSSES, 
are similar to those of the Arenig, the Lower Ordivician, I believe, 
greyish igneous rocks, with here and again sparkling white masses 
of auriferous quartzite. The subsoil is a cold, compact, impervious 
boulder clay, apparently perfectly free from any trace of calcareous 
matter; nor did we find any evidence of lime in the district, the 
river- ee pene as soft as rain-water, hence probably the absence 
of many of the limestone-loving species. The mountain sides, 
which ai ” thinly clothed with grass, are @ to a great extent unpro- 
ductive marsh and bog. The flora seems scanty, and nae 
ne ter ing mostly to what Mr. Hewett 
Watson termed the ‘British Type,” and, with one or two excep- 
The more noticeable are Nymphaea lutea,* Castalia speciosa,+ Drosera 
rotundifolia, Viola palustris, V. lutea, Sedum anglicum, Wahlenbergia 
hederacea,* Vaccinium Vitis-Id@a,t+ V. Myrtillus, Myosotis repens, 
Menyanthes trifoliata,* Pinguicula vulgaris, HEmpetrum nigrum,t 
‘ta chloroleuca, a few specimens; Narthecium ossifragum, 
Sees caspitosus, Eriophorum vaginatum, E. angustifolium, Carex 
curta,* C. binervis, C. acutiformis,* Nardus, Molinia varia, Festuca 
vivipara, and allies; Lomaria spicant, Asplenium T'richomanes, A. 
Adiantum- Saale Athyrium F tia. htiaite A. erectum, Lastraa Crete 
L clavatum,t L alpinum,t and at from 1000 to 00 ft. above sea- 
level, Rubus ideus, R Pe Fi. sti Rs leucostachys, 
R. pallidus Bab., Rosu tomentosa and R. dumalis were growing, 
re ane full of promise for fruit. But the mosses were abun- 
. Llyn ya 1267 ft. a is near the Arenig, two 
ee seniti east of the Afon Prysor, and its waters x eiaitamaalpe: 
uent of the Dee 
2. Llyn Beal -mawr; 1377 ft. 
8. Llyn Conlog-bach ; 1880 ft. 
4. Llyn-du-bach ; 1440 ft 
“% Afon Prysor ; 1000 to 1200 ft. 
8. — -Gasey; 1000 to 1600 ft. ; a beautiful waterfall by 
Moel-y-Slate 
9. Mody. Slates 1871 ft 
All these rm part of the watershed of the Afon Prysor, whose 
waters fall inte Cardigan Bay. 
ine . Se — above named marked thus * are not recorded in ren itoat 
ny for Merionethshire; those plants ked 
authority attached. pene Abed ates 
