loo The Irish Naturalist, February, 



the result of my collecting on the island, I enumerate 71 

 species and varieties. Thirteen of these are new to the 

 Co. Dublin list. Three varieties are probably additions to 

 the Irish flora. I have spared no trouble to make the list 

 as complete as possible, and for that purpose I searched every 

 available place on the island, and got excellent help from 

 some of the pleasant companions who were engaged in other 

 branches of natural history, whose names appear after the 

 plants they collected. 



In the list which follows plants new to Co. Dublin are 

 marked *, and those probably new to the Irish flora **. 



Sphagnum acutifoiifum, Ehrh.— Marshy ground, N.E. side, very 



scarce, April, 1906. 

 Polytrichum commune, h. — Marsh, N.E. side, very scarce, April, 



1906. 

 Ceratodon purpureus, Brid. — Sandy ground, N. side, April, 1906. 



Bank by a stream near plantation, June, 1905. 

 Campylopus frag:! lis, B. & S.— Bank near the Seal Hole, April, 



1906. Moist bank on E. side, 1905. 

 Dicranum scoparium, Hedwig. — Marsh, N. side, 1905. In neat 



tufts among rocky pasture, E. side, April, 1906. 



*Var. spadiceum, Boul.— Among rocks, N. side, 1906. On the 

 hill, east side, 1906. In the plantation near the castle, 1905. 

 D. fuscescens, Turn. — Among rocks, E. side, 1906. 

 Flssidens bryoides, Hedwig.— Bank, N. side, April, 1906. 

 ♦Crimmia apocarpa, Hedwig.— On rocks, E. side, 1906. 

 C. maritima, Turn. — Rocks near the sea, April, 1906. Caves on N. 



shore, 1906. At the Seal Hole, June, T905, R. LI. P., common. 

 C. pulvinata, Smith.- Old walls and rocks, April, 1906. 

 C. tricriophylla, Grev.— On rocks, E. side, June, 1905, M'A. On 



ocks, N. side, W. F. de V. Kane, 1905. 

 C. patens; B. & S.— Among wet rocks, N. side, June, 1905. 

 Racomitrium lanuginosum, Brid.— On heaths among rocks, 



j 905-6. 

 Pottia Heimli, Ftirnr.- -Bank near the sea, abundant, 1905-6. Damp 



ground near the sea, R. LI. P., 1905. Caves, N. side, April, 1906. 

 Tortula at rovirens, Lindb.— Old walls near the sea, 1905. Wet 



rocks, E. side, I906. 

 T. muralis, Hedw. — Rocky bank near the sea, 1906. Old walls, near 



castle, 1905. 

 T. laevipila, Schwgr. — On the trunks of trees in the plantation, June, 



1905- 



Barbula fallax, Hedwig.— Old walls, N.E. side, 1906. Bank in plan- 

 tation, 1905. About Trinity Well ; in moist, stony places, E. side. 1906 



*B. cylindrica, Schp.— Rocky bank, N. side, 1905. 



