986 



which have arisen from these researches. A renewed examination of 

 the flower at the proper season (April) may be expected to furnish 

 more precise information, now that the economy of the plant is un- 

 derstood, than when the early part of this memoir was prepared. 



W. Wilson. 



Orford Mount, September 6, 1847. 



List of a few Plants found in Bouldersdale and Teesdale, together 

 with the Formations on which they were found. By Daniel 

 Oliver, Esq. 



If the subjoined list of plants gathered by my companion, J, Alli- 

 son, who has kindly assisted in forming the list, or myself, during 

 late excursions in Bouldersdale and Teesdale, with the formations on 

 which they were found, is worthy of insertion in the pages of the 

 * Phytologist,' it is at thy service. 



On Basalt. 



Potentilla fruticosa 



alpestris 



Sedum Telephium 

 Saxifraga aizoides 

 Galium boreale 



Hieracium rigidum, &c. 

 Asplenium viride 

 Woodsia ilvensis 

 Equisetum variegatum 



On " Sugar -Limestone.^'' 



Thalictrum alpinum 

 Draba incana 

 Helianthemum canum 



Epilobium alpinum 

 Sedum villosum 



Spergula stricta 

 Dryas octopetala 

 Juncus triglumis 



On Limestone. 



Saxifraga Hirculus 

 Polystichum Lonchitis 



On Marshy Ground, Substrata Basalt. 

 Bartsia alpina Tofieldia palustris 



Daniel Oliver, tertius. 

 Benwell Fishery, Newcastle-upon-Tyne, 

 9 Mo. 22, 1847. 



