FORM OF LEAVES. 



31 



Hastate, Fig. 41, (halbert shaped,) triangular, 

 the base spreading and ending in two opposite an- 

 gles ; the form oblong, ending in a point, with the 

 sides somewhat hollowed. Ex. Bittersweet, 

 (Solanum dulcamara.) Canary Sage, (Salvia Ca- 

 nariensis.) 



Sinuate, Fig. 42, cut into rounded lobes, or 

 wide openings, the margins bending in and out. 

 Ex. Water Horehound, (Lycopus Europeus,) Red 

 Oak, (Quercus rubra.) 



Pinnatifid, Fig. 43, (wing cleft.) The leaf 

 is transversely divided into small lobes or 

 oblong segments ; but not reaching to the 

 midrib. Ex. Wild Peppergrass, (Lepidium 

 Virginicum.) 



Crenate, (notched,) with the teeth rounded 

 and not directed to either end of the leaf. 

 Ex. Ground Ivy, (Glechoma hederacea.) 



Laciniated, Fig. 45, cut into numerous 



irregular portions, or deep notches. Ex. 



Crow-foot, (Ranunculus,) Crane's Bill, 

 (Geranium.) 



Fig. 41 



Fig 42. 



Fig. 43. 



F'ig. 44. 



Fig. 45. 



Fig. 46- 



Palmate, Fig. 46, (palmated,) hand- 

 shaped, divided nearly to the insertion 

 of the petiole into oblong lobes of sim- 

 ilar sizes, but leaving a space entire, 

 like the palm of the hand. Ex. Pas- 

 sion flower, (Passiflora c&rulea,) Castor 

 Oil plant, (Ricinis communis.) 



What is the form of the hastate leaf? Of a sinuate leaf / Of a pin- 

 natifid leaf? Of a crenate leaf? Of a laciniated leaf ? Of a oalmate 

 l eaf? 



