570 



AMENTACELE. 



stamens 4 ; scales of the fertile catkin 2-flowered, per- 

 manent, becoming hard and dry ; stigmas 2 ; fruit flat- 

 tened, not winged. (Name, the Latin name of the 

 tree.) 



ALNUS GLUTiNdsA (Common Alder). 



* Alnus glutinfisa (Common Alder) is the only British 

 species belonging to this family. It is a widely diffused 

 tree, growing in swampy ground throughout most of 

 the temperate regions of the globe. 



