TILIA — HYPERICUM. 275 



indigenous amongst the limestone scars of the lower part of 

 Swaledale. He writes — 'The wood (where it occurs) near the 

 Round Howe is a rocky wood and without any planted trees. 

 At Clink Bank also it grows from the clefts of the rock in a very 

 precipitous place, where no trees can well have been planted. 

 In both places I should say that it is perfectly indigenous. Near 

 the Round Howe it is plentiful. i\t Clink Bank there are three 

 or four trees with innumerable young shoots growing from the 

 bottom out of the rocks, and Galium boreale grows upon the 

 rock within twenty yards of it.' As a planted tree the species is 

 not unfrequent. It is recorded by R. B. Bowman from West 

 Burton in Bishopdale, but the details respecting this station are 

 not stated. There is a noble avenue of Limes in Thirkleby Park 

 near Thirsk, which includes all the three species. 



Hypericum Androsaemum L. English type. Native. 

 Area 8.43. Range o-ioo. Woods and hedge-banks in the 

 low country, rare. In the Central Valley it grows in the neigh- 

 bourhood of Sinderby, and in the lane between Mawnby and 

 Kirkby Wiske. Near the Cleveland coast it grows at Kilton 

 and in the woods of Larpool and Hawsker, and it has also been 

 gathered by Reynolds near Hackness. 



Hypericum perforatum L. British type. Native. Area 

 general. Range 0-300. Common upon banks and along the sides 

 of streams throughout the Lower Zone, ascending in Teesdale to 

 Winch Bridge. The commonest species of the open low country. 



Hypericum dubium Leers. British type. Native. Area 

 9876.3. Range 0-400. In similar stations to the fjreceding, 

 but much less frequent. Ascending in Teesdale to Middleton 

 {Flora) and Cotterdale to 1,250 feet;y. Percival. 



Hypericum quadrangulum L,. =H. tetraptenan Fries. 

 British type. Native. Area general. Range 0-400. Frequent 

 in watery places amongst the vales and hills, ascending in the 

 Yore district to Fossdale Woods and as high on Gayle Moss. 



Hypericum humifusum L. British type. Native. Area 

 general. Range 0-300. Frequent upon sandy and grassy banks 



Sept. 1889. 



