STRUCTURAL BOTANY. 27 



14. Angle turned inward 15 



Angle tiu-ned outward 16 



15. Forming a slight notch retuse (III., Fig. a) 



Forming a deeper notch emarginate (b) 



Forming a very deep notcli obcordate 



16. Legs of the angle curved outward IT 



Legs of the angle curved inward, forming an an- 

 gle of 90° and over nmicronate (f) 



17. Angle of 90° acute (e) 



Angle below 90° acuminate (g) 



18 (13). Apex transversely cut off by a straight line 



truncate (c) 

 Apex cut off by a convex line, rounded .... 



ohtuse^ rounded (d) 



a b c d e f g 



19 (12). Base with an angle 20 



Base without an angle, rounded obtuse (m) 



20. Angle turned inward 22 



Angle turned outward 21 



21. Angle under 90° attenuate (o) 



Angle of 90° acute (n) 



22. Angle acute 23 



Angle obtuse 24 



23. Lobes rounded cordate, or heart-shajped (h) 



Lobes pointed and turned downward 



sagittate, or arrow-shaped (i) 



