6 



INTKODUCTION. 



Ovate. 



FIG. 9. 



Deltoid. 



FIG. 10. 



Elliptical. 



FIG. 11. 



Ovate, similar to lanceolate, but with length not more than two or 

 three times the width. (Fig. 9.) 



Deltoid, triangular in shape like 

 the Greek letter, Delta, from which 

 it takes its name. (Fig. 10.) 



Elliptical, when broadest in the 

 center, two or three times as long as 

 broad, and the ends of about the same 

 width. (Fig. 11.) 



Oval or Broadly Elliptical, same 

 but proportionally broader, the 

 length being considerably less than 

 twice the width. It is between 

 elliptical and orbicular or rotund, where length and breadth are about 

 equal. (Fig. 12.) 



Oblanceolate, same as lanceolate, 

 but reversed so as to be broadest near 

 the apex, the long taper to the petiole 

 and the short one to the apex. 



Spatulate, shaped like a spatula 

 similar to oblanceolate, but with 

 rounded instead of pointed apex. 

 (Fig. 13.) 



Cuneate or cuneiform, when shaped 

 like a wedge, broadest at the trun- 

 cate apex and tapering uniformly to the base. (Fig. 14.) Obovate, 

 similar to ovate but reversed the broadest part near the apex, and 

 base narrow. 



35. The Base and the Apex of the Leaf are also important points 

 to observe, and the principal forms for our present consideration may be 

 seen, with the names applied to them, in the accompanying diagrams. 

 (Fig. 15.) 



Orbicular. 



FIG. 12. 



Spatulate. 



FIG. 13. 



FIG. 15. 



Acute, when the sides come together at an acute angle. Acuminate 

 or taper-pointed, when the taper is more prolonged tapering to a 

 sharper point. 



Obtuse when blunt or rounded, the sides meeting at an obtuse angle. 



Mucronate, when an obtuse apex is tipped with a small abrupt point. 



Fig. 15. Forms of Base and Apex of Leaves. 



