176 



baker's north YORKSHIRE. 



The best botanical localities are Askham Bogs and the sloping 

 wooded bank of Magnesian Limestone which margins the 

 Wharfe above Thorpe Arch. At Thorpe Arch, as at Tanfield, 

 the most noteworthy plants of the limestone are species which 

 range under the Xerophilous category. The following is the 

 Thorpe Arch list : 



Thalictrum flexuosuvi 

 Aquilegia vulgaris 

 Adcea spicata 

 Cochlearia officinalis 

 HelianthemMm vidgai-e 

 Viola hirta 

 Stellaria nemorum 

 Hypericum montanum 

 Astragalus glycyphyllos 

 „ Hypo^lottis 

 Spircea Filipendula 

 Rosa Sabiin 



„ juicrantha 

 Epilobium angustifolium 

 Pastinaca saliva 

 Caucalis daucoides 

 Sambucus Ebulus 

 Galium tricor^ie 

 Asperula Cynanchica 

 Scabiosa columbaria 

 Helminthia echioides 

 Pier is hieracioides 



Solidago Virgaurea 

 Piula Couyza 

 Specularia hybrida 

 Chlora perfoliata 

 Linaria Elatine 

 Lathrcea squamaria 

 Calamintha Acinos 

 Lithospermum officinale 

 Neottia Nidus-avis 

 Orchis pyramidalis 

 Ophrys apifera 



,, muscifera 

 Epipactis media 

 Na 1 xissus pseudo-n a rcissus 

 Co7ivallaria majalis 

 Melica nutans 

 Glyceria distans 

 Brachypodiiim pinnatum 

 Hordemn sylvaticum 



Gymnostomuni tenue 

 Pottia Heimii. 



Askham Bogs are one of the most interesting of those carrs 

 of the Central Valley of which mention has been made. They 

 are situated by the side of the North Eastern railway 

 not far from Copmanthorpe station, and consist of several 

 acres of ground which is quite undrained. They yield Cladium 

 Mariscus and abundance of Carex paradoxa, and are bound- 

 ed by brown peaty ditches, and, in some places are overgrown 

 by aboriginal trees and brushwood, Alder, Rhanmus Erangula, 

 Myrica Gale, and Osniunda regalis in beautiful condition, in 

 addition to which the following interesting plants occur ; 



I 



