316 HYMENOPHYLLUM. [July, 



Pterogonium gracile, Swartz, On trees and rocks ; common. 



Isothecium myurum and myosuroides, Dill. On trees and 

 rocks; common. 



Isothecium alopecurum, Dill. This fine Moss covers the rocks 

 and stones through which the rivulet flows in the deep-shaded 

 ravine of Ghoul's Den. 



Climacium dendroides, Web. and Mohr. Common; found in 

 fruit, Tent's Muirs. 



Leskea sericea, Dill. On rocks by the sea-coast ; common, etc. 



Omalia trichomanoides, Dill. Sparingly distributed. 



Neckera complanata, Bryol. Eur. On the sea-coast east of 

 St. Andrew's, etc. ; common. 



Neckera crispa, Dill. On the Lommonds. 



Hookeria lucens, Dill. On rocks, Kenly Den, in fruit; east 

 sea-coast, and about old coal-pits. 



Fontinalis ant'tpyretica, L. Common in the waters of the 

 Kenly and other streams. 



Hymenophyllum tunbridgense and H. Wilsoni. From the Pro- 

 ceedings of the Dublin Natural History Society. By Wm. 

 Andrews, President. 



My present remarks will be confined to the genus Hymeno- 

 phyllum, a family the most beautiful and minute of our native 

 Ferns, and when seen in all their luxuriance of growth in their 

 primeval woods, or on the rocks of the alpine districts of the 

 mild and moist atmosphere which characterizes the south-west- 

 ern parts of this country, their beautiful and singularly deli- 

 cate fronds extensively spread like a velvet carpet of the most 

 rich and verdant hue. Of this genus we have two well re- 

 corded and described species, Hymenophyllum tunbridgense and 

 H. Wilsoni ; but the latter, in Mr. Bentham's recently published 

 Handbook, has been discarded, but with what usefulness is to 

 be seen. It is needless to refer to the works of the older bo- 

 tanists, as Ray's ' Synopsis,' Withering's ' Arrangement,' Hud- 

 son's ' Flora Anglica,' Bolton's Filices Botanicse, and others ; 

 for such confusion appears with regard to the species H. tun- 

 bridgense and its localities, that its habit and peculiarities ap- 

 pear to have been but indifferently known, especially when we 



