BIRCH GROUP. 



4 8 ; stigmas 2 ; fruit drupe-like, 1 -seeded, 

 the Greek name of the Tamarisk.) 



569 



(Xame 



B&TTJLA ALBA (White Birch). 



Sub-order III. BETULINEJE. Birch Group. 



4. B^TULA (Birch). Stamens and pistils in separate 

 flowers (monoecious) ; scales of the barren catkin in threes ; 

 stamens 10 12 ; scales of the fertile catkin 3-lobed, 3- 

 flowered ; stigmas 2 ; fruit flattened, 1 -seeded, winged. 

 (Name, the Latin name of the tree.) 



* Two species of Birch are natives of Britain ; B. alba, 

 the White Birch, a forest tree, which for lightness, grace, 

 and elegance, stands unrivalled, and has been styled "the 

 Lady of the Woods ; " and B. nana, Dwarf Birch, a 

 mountain shrub, with wiry branches, and numerous 

 round, notched leaves, which are beautifully veined. 



5. ALNUS (Alder). Stamens and pistils in separate 

 flowers ; scales of the barren catkin 3-lobed, 3-flowered ; 



