PBOTEACEJE. 



::m 



woody false dissepiment, formed by the union of the coats of the two 

 collateral seeds, thickened where in contact. The seeds are flattened, 

 surrounded by a wing of variable development ; and the central part, 

 containing an exalbuminous embryo, is half sunk in a cavity of the 

 false septum. Banksia consists of Australian and Tasmanian trees 



Banlcsia ericifolia. 



Fig. 228. 

 Flower (f). 



Fig. 227. 

 Floriferous branch (|). 



Fig. 229. 



Loner, section 



of flower. 



and shrubs. Their leaves are alternate and verticillate, varying in 

 form, rigid and coriaceous, and usually dry. The blade is usually flat 

 with scarcely reflexed edges. But these edges are sometimes curled 

 downwards closely, so that the leaf becomes almost cylindrical, like 

 that of several species of Grevittea and TIakea. Their edges are 

 rarely quite entire ; the blade is commonly incised or pinnatifid. In 

 young plants the leaves are pretty frequently polymorphous. The 

 flowers form terminal or subaxillary spikes, often accompanied 

 by several approximated leaves at the base. The involucre when 



