330 president's address. 



(Schl.), one of the rarest of our indigenous species, and which 

 we had, on two or three previous visits, collected, in its known 

 station on the limestone, apparently attended by igneous action, 

 near Widdy-Bank. 



" Almost close by the Cauldron Snout did grow, at one time, 

 Woodsia ilvensis. From the increased demand for our more 

 uncommon ferns, arising no doubt, in part, from the very popular 

 fashion of their ornamental culture in the AVardian case, it 

 becomes a matter of needful prudence to retain to ourselves, 

 under the terms of a vague and general locality, the exact spot 

 where such may be found ; in the case of Woodsia, this care is 

 especially desirable. 



" Teesdale abounds in Hieracia, but, from the unsettled state 

 of the nomenclature of our species, and our very imperfect 

 knowledge of the extent of their variation, we can only indicate 

 such as may be pretty readily recognised, and of which we have, 

 in Teesdale, gathered specimens. These are Hieraciuni iricum 

 (Fries,), H. Lapeyrousii (Bab.), H. anglicuni (Fr.), II. murorum 

 (L, "?). H. vulgatum (Fr.), U. gothicum (Fr.), H. crocatum (Fr.), 

 and its narrow -leaved form, H. angustatum (Fries.), H. boreale 

 (Fr.), H. umbellaium. Besides these, Hieracium pallescenSj 

 II. saxifragum (Fr.), H. corymhosum, H. trldentatum and H. 

 coesium (Fr.), are stated to occur in Teesdale. But a portion, 

 however, of the above were gathered on the occasion of our recent 

 visit to the Valley of Tees ; nor did we renew our acquaintance 

 with several other and well known rarities, which every collector 

 knows the district to afford. Potentilla Jruticosa, of course, one 

 cannot help seeing growing almost by the margin of the river, 

 each bush dotted over with its conspicuously bright yellow 

 flowers ; but the Cronkley plants, Dryas octopetala, Heliantlir- 

 emum canum, Folygala uliginosa, and others, were beyond our 

 reach. 



^^ Melampyrum sylvatlcum grows plentifully on an island in 

 the Tees, by the Winch Bridge ; the neighbourhood of which 

 was visited by a section of the Club at a late hour of the day j 

 but yet the dim light revealed amply its romantic and beautiful 

 effect. One of the recently introduced Continental species of 



