BRITISH FOREST TR1 13 



Tin FOKKST TRKKS OF BRITAIN. 



J'rincipal Species. The chief trees to be found in north- 

 ern Europe forming, or under certain circumstances capable 

 of forming, pure forests without an admixture of other 

 species are : 



Coniferous frees 



1. Scots or common pine, or Scots fir (Pinus sylvestris, L.). 



2. Spruce, spruce fir, or Norway spruce (Picea e.vcelsa, Link.). 



3. Silver fir (Al>ies pectinata, D.C.). 



4. Larch (Lari.\ ciiropua, D.C.). 

 />'; sad -leaved trees 



(A) Hardwoods. 



1. Beech (Fagns sylvatica, L.). 



2. Oak (Qnerctis pcdnnculata, Ehrh., and sessili flora. Sin. 



(B) Softwoods. 



1. Birch (Betnla alba, L.). 



2. Alder (Almis ghttinosa, Gaert.). 



Minor Species. Other trees, usually found in Britain 

 only mixed in forests of the above principal species, 

 are : 



Coniferous trees (all quite capable in themselves of forming pure 

 forest) 



(A) Indigenous to Europe 



1. Black, Austrian, or Corsican pine (/'inns larin<>. I'.iir - 



.lustriaca, Hoss). 



2. Maritime pine (Pinus maritima, Lam.). 

 ;. Mountain pine (Pimis montana, Mill). 



4. Cembran pine (Finns cembra, L.). 



5. Nordmann's fir (Abies Nordmanntana, Link.). 



(B) Introduced from North Amcri,\i 



1. Weymouth pine (Thins strobns, L. ). 



2. Pitch pine (Pinus ri^ida, Mill). 



3. Yellow pine (Pinus ponderosa^ Mill). 



4. Jeffrey's pine (Pinus Jcfreyi, Murr.). 



5. Douglas fa (Pseudotsvga Dwtfcuii, Carr). 



