FORMS OF COMPOUND LEAVES. 



47 



Fig. 67. TRiriNNATE. HEMLOCK. 



A tripinnaU leaf folium tripinnatum ( fig. 67). (From 

 *he Latin, tres, three; and pinna, wing.) Coni'um macula- 

 turn, common hemlock. Common in many parts of the 

 United States. When the common petiole has bipinnate leaves 

 on each side. 



A pinnate leaf, with bijugate leaves 

 (fig. 68). Folium pinnatum ; foliolis 

 bijugis (from the Latin, bis, two; and 

 jugum, yoke), formed of two pairs of 

 leaflets, as seen in the Cassia absus, of 

 India and Egypt. 



Fig, 68. PI NATTB. 



