FERNS. 387 
A. Adiantum-nigrum, L. The most frequent fern in 
Alderney with the exception of the common Bracken: but by no 
means common, and often small. 
A. Trichomanes, L. Very rare. One root in an old wall 
mear the Presbyterian Church. 
A. marinum, L. Rare. Sparingly in several places on the 
coast near Corbelets. Plentiful on the inner walls of Fort Houmet. 
Scattered roots here and there among rocks on the cliffs. 
A. Ruta-muraria, L. Very rare. On one of the walls of Fort 
Essex, in good quantity. 
Scolopendrium vulgare, Sym. Rare. A few scattered 
roots in the larger valleys, and in the old quarries at Mauney. 
Stunted plants on walls on the outskirts of the town. 
Ceterach officinarum, Willd. Very rare. Three plants on 
a wall on the west side of St. Anne’s. 
Blechnum boreale, Sw. Rare. A few roots in one of the 
‘Clanque Valleys. Rose Farm Valley, scarce. 
Pteris aquilina, L. Very common. This is the only fern 
at all plentiful in Alderney. 
MOSSES. 
Catharinea undulata, Web. & Mohr. In an old quarry at 
Clanque. Banks behind the Terrace. Reuters Valley. 
Polytrichum piliferum, Schreb. Near Chaise 4 l’Emauve. 
Great quarry at Mauney. 
P. juniperinum, Willd. Common on the cliffs, as well as in 
old quarries and heathy places. 
Pleuridium subulatum, Rab. On a moist bank on the 
cliffs above Clanque. 
Ceratodon purpureus, Brid. Very common. 
Dicranella heteromalla, Schp. On banks in Rose Farm 
Valley. Cliffs near Val du Sud, in a rabbit hole. 
Campylopus fragilis, B. & S. Frequent on the cliffs. 
