28 THE FIRST BOOK OP BOTANY. 



EXERCISE VII. 

 Bases. 



THE BASE of a leaf is its lower or attached end. 

 Bases are 



COR'DATE (HEART-SHAPED). Shaped like a heart, 

 at the base. Fig. 25. 



FIG. 25. 



FIG. 26. 



FIG. 27. 



REN'IFORM*(KIDNEY-SHAPED). Shaped like a kid- 

 ney. Broader than long. Fig. 26. 



AURIC'TJLATE (EAR-SHAPED). With small, rounded 

 lobes at the base. Fig. 27. 



FIG. 28. 



FIG. 29. 



FIG. 30. 



FIG. 31. 



HAS'TATE (HALBERT - SHAPED). With spreading 

 lobes at the base. Fig. 28. 



SAGITTATE (ARROW-SHAPED). With sharp lobes at 

 the base pointing backward. Fig. 29. 



* By some, this term is applied only to the whole leaf. 



