TEICHOMANES RADICANS. 287 



being eradicated, or even of its being perceptibly diminished in abundance. 

 It is very curious, that ten years subsequently to its liberal introduction 

 by Mr. Kobson, Miss Helen Blackburn, daughter of the Director of the 

 Valentia Slate Establishment, found it growing abundantly in Valentia 

 Island, in company with Hymenophj'Uum Tunbridgense ; and further, that 

 the plants at Killarney and Valentia agree in aU their characters, while 

 those in the intervening district are very dissimilar. — (See Phytol. iv. 1007). 

 Mr. S. P. Woodward informs me that the late Dr. Taylor discovered a sta- 

 tion at Gortagaree, between Killarney and Kenmare ; the Hon. DeyroUes 

 de Moleynes discovered a station near Dingle, and Mr. Andrews and Mr. 

 Moore found it at Mount Eagle, near the same town ; Mr. Andrews 1ms 

 also found it at Blackstones, in Glouin Caragh. For Kerry specimens, and 

 much valuable information respecting them, I am indebted to Mr. Andrews, 

 Mr. Foote, Mr. Ogilby, Dr. Mackay, Mr. Moore, Mr. Dennes, Mr. Pamphn, 

 and Dr. Kinahan. Mr. Andrews and Mr. Foote were travelling in company, 

 when the former discovered the Blackstones locality. The fern was grow- 

 ing in a wild and romantic cave, the rocky waUs of which had been for ages 

 covered with a drapery of the overlapping fronds, hundreds of which, hang- 

 ing gracefully down, formed a pendulous mass of the loveliest green, which 

 contrasted strikingly vpith the sombre hue of the Killarney plant : the rhi- 

 zomes, spread over the moist sm'face of the rock, formed a reticulated and 

 tenacious covering. 



WiCKLOW. — I was informed by the late Mr. W. Thompson, that, ac- 

 cording to the MSS. of the late Mr. Templeton, this fern was first found 

 in Ireland by Dr. Whitley Stokes, at Powerscourt waterfall, in this county : 

 at no time did it exist here in any quantity. Dr. Mackay informs me that 

 he has seen a single plant here, as well as at Hermitage Glen, also in this 

 county, where it was first found by Mr. Nuttal. I believe many years have 

 elapsed since any botanist has found it in this locality. 



The radicles and rhizome of Trichomanes radicans a good 

 deal resemble those of Ctenopteris vulgaris : the radicles are 

 black, and clothed with fibrillse, which, like the olaspers of ivy, 

 adhere to the surface of rock : the rhizome is black, tomentose, 

 tough, and remarkably long ; I have collected specimens which 

 must have been many yards in length, and I observed that the 

 rhizomes formed a kind of net-work over the surface of a rock, 

 to which the radicles were adherent : this I found to be a cha- 

 racter of the plant when most luxuriant, but I discovered other 



