82 



Elementary Botany 



has its terminal lobe large and rounded, and the side lobes 

 gradually getting smaller towards the base (fig. 113), it is lyrate ; 



Fig. 132. — Bipinnate leaf of G/^rf/^Jc/t/a iriacanthos. 



whilst if the terminal lobe is triangular, and the lobes are also 

 angular (fig. in), it is runoinate. 



When each of the pinnae of a pinnate leaf is itself pinnate. 



Fig. 133.— Tripinnate leaf of Thalicirttm. 



the leaf is said to be bipinnate. If the division be carried a 

 step further, it is tripinnate (fig. 133). 



■\Vhen the divisions of the leaf spread out like the fingers 



