NOETHUMBERLAND AND DURHAM. 155 



3. P. aciuni, L. Denizen. Engiisli type. Area C, 1^, 1). 



Eange 1, 2. 



l^ot unfrequent in woods and by stream-sides, but doubtfully 

 indigenous, ascending to 1100 feet in Rookbope (Wear district). 



4. P. cerasus, L. Alien. 



In plantations in several places near Enableton, but always 

 planted (E. Embleton). 



2. SPIR^A, L. 



1. S. ulmaria, L. Native. British type. Area C, N, D. 



Range 1, 2. 



Common by stream-sides and in damp woods, ascending to 550 

 yards on Cheviot in Dunsdale, and as high in Harwood Dale. 



2. S. Jilipendula, L. I^ative. Xeropbilous. English type. 



Area C, JST, D. Range 1. 



On the basalt at Crag Close near Barrasford (T. R.); and at 

 Spindlestone, plentiful in the plantations (W. Richardson. T.). 

 On the Magnesian Limestone at Byers Quarry near "Whitburn, 

 and at Coniscliffe and Baydales pear Darlington (F. R !). 



3. S. salicifolia, L. Alien. 



In several places in parks and plantations, as Hulne, Howick, 

 Wallington, and Gibside. 



3. GEUM, Linn. 



1. G. urlanum, L. Native. British type. Area C, IST, D. 

 Range 1, 2. 



Common in woods and on hedge-banks, ascending in Coquet- 

 dale to Harbottle, "Weardale to Elm Pord Wood, 1150 feet, and 

 Teesdale to 350 yards. This and the next frequently produce 

 natural hybrids, like the primrose and cowslip. 



