INTRODUCTORY LESSONS. xv 
which becomes reniform if the apex, is rounded, etc. Obovate ; Oblance- 
olate ; Obcordate, etc., apply to forms the reverse of ovate, lanceolate, etc. 
05 26 or 28 29 30 31 $2 338, 
Forms oF Leives.—95, Lanceolate. 26. Oblanceolate. 27. Spatulate. 28. Ovate (Egg 
shaped). 29. Cordate (Heart-shaped). 30. Reniform (Kidney-shaped). 81. Falcate (Sickle« 
shaped . 32. Hastate (Spear-shaped). 82a. Auriculate (Eared) base. 
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 
Fimarginate ; Figures 23, 24, 29, deute; Fig. 25, Acuminate; Fig. 26, 
Obtuce. 
Margins of Leaves. All these forms are represented as having 
LEAF MARGINE.—O3. Serrate. 34. Dentate. 35. Crenate. 36. Wavy. 37. Sinuate. 38. Incised. 
389. Erose. # 
entire or nearly entire margins, but the margins niay 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- 
