332 Scientific Proceedings, Royal Dublin Society. 



afterwards becoming abundant. A little below Oahir the follow- 

 ing also occur: — Thalictrum flavum, Nasturtium palustre, CEnanthe 

 phellandrium, (E. crocata, the latter becoming frequent soon, and 

 Tiissilago petasites. Near the end of the demesne I found Carex 

 acuta abundant. Here, too, is a wild-looking patch of Senecio 

 saracenicus, but I believe it is unquestionably an introduced plant 

 in Ireland. After a few miles we approached Ardfinan, Orchis 

 morio and Thalictrum flavum still accompanying us. In the 

 village of Ardfinan Senehiera didyma has established itself, 

 and in the stream Sparganium simplex was observed. About 

 a mile lower down I met with Scirpus sylvaticiis again ; and all 

 the way on to Clonmel Thalictrum flavum, Nasturtium palustre, 

 Scrophularia aquatica, and the two (Enanthes are frequent 

 and characteristic. About three miles below Ardfinan, near 

 St. Bridget's Well, I gathered Senecio saracenicus for the second 

 time, and on the opposite side of the river Stimulus lupulus is, at 

 any rate, thoroughly established. A little below Newcastle Sym- 

 phytum officinale was first met with, and about three miles further 

 on Lotus major was also observed. At Knocklofty and in Kil- 

 manahan wood the timber is magnificent and well worth a visit, 

 the ash-trees and a species of poplar (P. monilifera) being' the 

 finest I have ever seen. These are by the river, which we crossed 

 here to the left bank. Since Newcastle the Suir has doubled back 

 northwards in its course for several miles to the present point, 

 whence it flows east through Clonmel to the sea at Waterford. 

 Here many large shade-loving and aquatic plants abound ; amongst 

 them I gathered Carex strigosa, a very rare sedge in Ireland. I 

 had found it previously, I believe, near Oahir. In the rank soil 

 beneath this large timber CEnanthe crocata reached a height of 

 above seven feet, and Helosciadium nodiflorum rivalled it with six 

 feet of erect growth and radical leaves about three feet long in the 

 largest plants. These will, I think, be recognised as extraordinary 

 dimensions. Here were found also Alliaria officinalis, Epilohium 

 hirsutum, Valeriana officinalis, Crepis paludosa, Dipsacus sylvestris) 

 Filago germanica, and Carex sylvatica. Peucedanum ostruthium was 

 noticed, too, apparently established amongst ground that had pre- 

 viously formed a road. In a couple more miles we reached Clon- 

 mel, where we remained for the night. 



Next morning, June 4, we kept the towpath on the left or 



