XORTKrMBF.RLAXD AXD DUEHAM. 143 



limestone, ascending Coquetdale to porphyritic cliffs at Windy- 

 haugh (250 yards), and Weardale to the wood above the village 

 of "W'earhead (1150 feet). 



8. H. montanum, L. Native. Xerophilous. English type. 



Area D. Eange 1 . 

 In several of the Magnesian Limestone denes, as Castle Eden, 

 Dalton, Hawthorne, and Byhope. 



9. H. calycinum, L. Alien. 



Planted near Cornhill (R. Embleton. A.) ; and at Hulne 

 Abbey near Alnwick (T.). A native of Turkey. 



Order 17. ACEKACE^. 

 1. ACER, L. 



1. A.cam]}estre,Ij. Native. English type. AreaD. Eange 1. 



Clearly native in the denes of the Magnesian Limestone, but 

 doubtfully so north of the Tyne. It may be indigenous in the 

 woods on the steep banks of the Wansbeck about Morpeth and 

 Mitford, where there are trees by the stream side 30 to 40 feet 

 high, but in Cheviot-land it seems evidently introduced. 



2. A. pseudo-platanus, L. Alien. 



Common in woods and hedge-rows, frequent in the low coun- 

 try, and one of the commonest trees about farm-houses in the 

 dales, ascending in Harwood Dale to 1600 feet, and in East and 

 "West Allendale to 1650 feet. "Winch regarded it as indigenous, 

 and it is considered to be so by Mr. Carr, whose remarks on the 

 subject will be found in the thii'd volume of the Transactions, 

 page 9. 



Order 18. GERANIACE^. 



1. ERODIUM, VHerit. 



1. ^. cicutarium, Sm. Native. British type. Area C, IST, 

 D. Range 1. 

 Erequent in diy sandy soil, especially near the sea. Near 

 "Wooler at 350 feet. 



