276 baker's north YORKSHIRE. 



throughout the lower zone. Ascends to the Leyburn Flagstone 

 Quarries; J. Percival. 



Hypericum pulchrum L. British type. Native. Area 

 general. Range 0-550. Frequent upon heathery banks from 

 the vales upwards to the scars of Bl'eabeck and Cronkley. The 

 commonest species of the heathery tracts. 



Hypericum hirsutum L. British type. Native. Area 

 general. Range 0-450. Frequent in woods and upon hedge- 

 banks, ascending to the Main Limestone scars of Keld and 

 Harlen Fell. The commonest species of the calcareous glens 

 and dales. 



Hypericum montanum L. English type. Native. Xero- 

 philous. Area 6.32. Range 50-200. About the Magnesian 

 Limestone at the quarry above Thorpe Arch. In the Vale of 

 Mowbray between Coxwold and Thirkleby. Amongst the 

 woods of the eastern calcareous range in several places ; 

 Flazendale, Beckdale, Hackness, etc., and in the Howardian 

 tract in Hovingham and Gilla Leys Woods. 



Hypericum elodes L. English type. Native. Area 

 4321. Range 0-250. Frequent amongst the heaths of the 

 Central Vale and Howardian tract ; Pilmoor, Stockton Forest, 

 Strensall Common, Scakleton Moor, Slingsby Moor, etc. 

 Amongst the eastern arenaceous hills in Sleddale and Rosedale. 



Hypericum calycinum L. Alien. Subspontaneous or 

 planted in Cleveland in Mulgrave Woods; W. Mndd\ In a 

 small wood above Leyburn Shawl; /. Percival and W. Foggitt. 

 Indigenous in Turkey. 



Acer campestre L. English type. Native. Area general. 

 Range 0-300. Frequent in woods and hedges, and occasionally, 

 but not commonly, in the aboriginal woods of the calcareous 

 hills. The highest place in which I have seen it is amongst 

 the rocks at the foot of Whitstoncliff. Nappa Scar, Wenslej'- 

 dale; J. Percival. 



Acer Pseudo-platanus L. Denizen. Area general. 

 Range 0-450. The Coniferse excepted, the Sycamore is the 



