271 



PLANTS OF 

 LANGSTROTHDALE, MID-WEST YORKSHIRE. 



TREVOR BASIL WOODD, 

 Oughtershaw Hall; and Trinity College, Cambridge. 



The following is not a complete list, and some orders (Cyperaceae, 

 for instance) have been scarcely investigated. However, as the 

 district is so remote, and so rarely visited, it may be interesting, 

 especially as many plants are found growing at 1,200 ft. to which 

 the limit of 900 ft. is assigned in the ' Flora of West Yorkshire.' 

 The elevations have been added in the cases in which they differ 

 from the 'Flora.' Where the locality and range are not stated, the 

 plants are found at or near Oughtershaw (about 1,200 ft.), or 

 ascend to the elevations given in the ' Flora.' I am told that 

 Vacdniutn oxycoccus has been found at Oughtershaw, but I have 

 never been able to find it myself, and it cannot be abundant. 

 I have not observed any difference between the flora of the Green- 

 field branch-dale and the Oughtershaw or main valley of Langstroth- 

 dale. Occasional bands of gritstone appear in both valleys, but 

 there is no slate in either. The draining and planting which has 

 been carried out during the last thirty years in the Oughtershaw 

 valley may have raised some of the mid-agrarian plants to a higher 

 range. 



Thalictrum minus var. montanum. Scar-house, Hubberholme. 



Thalictrum majus. Buckden Woods. 



Anemone nemorosa. Oughtershaw Wood. 



Ranunculus aquatilis. Source of river Wharfe. 



Ranunculus flammula. 



Ranunculus bulbosus. 



Ranunculus ficaria. Oughtershaw, 1,200 ft. 



Trollius europaeus. Oughtershaw, abundant. 



Caltha palustris. 



Actaea spicata. Raisghyll. 



[Aconitum napellus. Garden escape ; Oughtershaw.] 



Nasturtium officinale. 



Arabis hirsuta. 



Cochlearia officinalis. 



Cardamine palustris. 



Capsella bursa-pastoris. 



Helianthemum vulgare. The Helks, Beckermonds. 



Sept. 1889. 



