138 



PERCIVAL : THE FLORA OF WENSLEYDALE. 



Atriplex erecta Huds. In waste places, not unfrequent. 



Atriplex hastata L. Casual. 



Rumex conglomeratus Murr. 



Rumex nemorosus Schrad. a. viridis. 



Rumex obtusifolius Auct., and R. crispus L. 



Rumex aquaticus L. Near Appersett ; in lane near Thornton 



Rust ; and at Semerwater. 

 Rumex Acetosa L., and R. Acetosella L. 

 Polygonum Convolvulus L., and P. aviculare L. 

 Polygonum Hydropiper L. In 'backwater' at Hawes ; and 



Semerwater. 

 Polygonum Persicaria L. 

 Polygonum amphibium L. b. terrestre. 

 Polygonum Bistorta L. 



Polygonum viviparum L. In pastures about Whitfield Gill, 



Askrigg. 

 Empetrum nigrum L. 



Euphorbia Helioscopia L., and E. Peplus L. 



Mercurialis perennis L. 



Parietaria diffusa Koch. On Bolton Casde. 



Urtica dioica L., and U. urens L. 



Ulmus suberosa Ehrh. Planted in various places. 



Ulmus montana Sm. 



Quercus Robur L., a. pedunculata and b. sessiliflora. 

 Fagus sylvatica L. 

 Corylus Avellana L. 

 Alnus glutinosa L. 



Betula alba L., a. verrucosa, b. glutinosa, and c pubescens. 

 Populus tremula L. By river west of Bearpark ; in Hawbank 



Wood ; and Skelgill. 

 Salix pentandra L., and S. alba L. 

 Salix purpurea L., and S. viminalis L. 

 Salix cinerea L., b. aquatica, and c. oleifolia. 

 Salix aurita L., and S. caprea L. 



Salix phylicifolia ' Linn.' Frequent throughout the valley. 



k. Borreriana. 

 Salix nigricans Sm. Gayledale. 



Salix repens L. Locker Tarn, Carperby; and moor south-west 

 of Addlebrough. 



Naturalist, 



