INTRODUCTORY LJtBBONS. 



xvn 



which becomes reniform if the apex, is rounded, etc. Obovate ; Oblance- 

 olate; Obcordate, etc., apply $o forms the reverse of ovate, lanceolate, etc. 



25 26 27 28 



FORMS OF LEAVES. 25. Lanceolate, 

 shaped) . 29._Cordate (Heart- shaped) . 



31 32 



27. Spatulate. 



i. Oblanceolate. 



^ _ J. Reniform (Kidney-shaped). 



haped 1 . 3 2~ Hastate (Spear-shaped). 32a. Auriculate (Eared) base. 



I. Ovate (Egy 



"ckle- 



31. Falcate (Sickl 



Apexes of Leaves. There are terms descriptive of the apexes (the 

 upper ends) of leaves. Fig. 18 has a Cuspidate apex; Fig. 19, Notched or 

 Emarginale ; Figures 23, 24, 29, Acute ; Fig. 25, Acuminate; Fig. 26, 

 Obtuse. 



Margins of Leaves. All these forms are represented as having 



33 34 35 36 87 38 39 



LKAF MARGINS. 33. Serrate. 34. Dentate. 35. Crenate. 36. Wavy. 37. Sinuate. 38. Incised. 

 39. Erose. 



entire or nearly entire margins, but the margins may be notched or cut 

 in various ways. Figures 33 to 39 will assist you in describing the mar- 

 gins of your leaves. Here, also, you will find it necessary to combine ad' 



