24 



The Naturalist. 



Mercurialis peremis, L. Abundant in both counties. 

 M. annua, L. (C) Port Penrhyn, Bangor (sparingly). 



EMPETRACEtE. 



Empetrum nigrum^ L. Common on the Snowdonian range. 



CALLITRICHACE^. 

 CallUriche autumnalis^ L. (A) Coron Lake, &c. 

 G. verna, L. Frequent in both counties. 



URTICACE^. 

 Urtica urens, L. Abundant in both counties, 

 U. dioica, L. • Do. do. 



Parietaria officinalis, L. do. 

 Sumulus Lupulus, L. Frequent in both counties. 

 Ulmus Montana, Sm. Frequent in woods in both counties. 

 U. campestris, Sm. Do. do. 



AMENTACE^. 



Myrica Gale, L. Common in bogs and on wet moors in both counties 



Alnus glutinosa, L. Abundant in both counties. 



Betula alba, L. Do. do. 



CarpinuB Betulus, L. Common in both counties, 



Corylus Avellana, L. Do. do. 



Fagus sylvatica, L. Do. do. 



Quercus Rohur, L. Do. do. 



Salix pentandra, L. Frequent in both counties. 



S.fragilis, L. Do. do. 



S. alba, L. Do. do. 



S. triandra, L. Do. do. 



S. viminalis, L. Common in both counties. 



^S'. capraa, L. Do. do. 



S. aurita, L. Do. do. 



S. repens, L. Do. do. 



S. repens, var. argentea, (A) South-west coast, near Towyn Capel. 



S. herbacea, L. (C) Twll du, Ysgolion duon, &c. 



S. aquatica, L. Common in both counties. 



8. oleifolia, L. (A) Near Beaumaris. 



Popnlus alba, L. Common in woods in both counties. 



P. tremula, L. Do. do. 



P. nigra, L. Do. do. 



CONIFERS. 



Pinus sylvestris, L. Abundant in both counties. 

 Juniperns communis, L. Frequent in both counties. 



