44 



FORMS OF COMPOUND LEAVES. 



Fig. 59. TERNATE. 



A ternate leaf folium terna- 

 turn (Jig. 59). (From the Latin, 

 ternus, three and three.) When 

 three leaflets arise from one 

 petiole. 



Example: the Trifolium pra- 

 tense, red clover. 



Biternate, twice three leaved : 

 the petiole divided into three 

 parts, and each part bearing three 

 leaflets. 



Triternate, three times three 

 leaved : a common petiole divided 

 into three parts, and each of these parts subdivided into three, 

 and each subdivision bearing three leaflets, as in the wind flower. 



A ternate leaf, which is also 

 doubly serrate (Jig. 60), that 

 is, folium ternatum, foliis du- 

 plicato-serratis, a ternate leaf, 

 with doubly serrate leaflets, 

 as in Indian physic, Spir&a 

 trifoliata. 



Fig. 60. TERNATE. 



A quaternate leaf folium 

 quaternatum (Jig. 61). (From 

 the Latin, quatcr, four.) Having 

 four leaflets growing from a com 

 mon petiole or leaf-stalk. 



Fig. 61. QUATERNATE. 



