18 



OBJECT LESSONS IN BOTANY. 



the 62:2: inverted. A similar form, but narrower, is the 6b- 

 lanceolate; that is, the inverted lance-shaped, like the leaf 

 of Papaw, or Fig. 19. Next, still narrower, is the sjpatulate^ 

 a iigure compared to the surgeon's spatula (Fig. 21); and 

 lastly, the wedge-shaped, or cimeate^ tapering from a broad 

 apex to a slender base, as in Fig. 20. 



Fig. 18. Obovate leaf of the Smoke-tree {Rhus Coti'nus). 

 Fig. 19. Oblanceolate leaf of Muhlenburg's Willow. 

 Fig. 20. Cuueate leaf of a Sundew (Drosera longifoUa), 

 Fig. 21. Spatulate leaf of a Sundew (variety of i>. longifolia). 



18. Thus we have arranged these twelve forms of feather- 

 veined leaves into three classes. 



such leaves. Oblanceolate? Sliow us examples. Spatulate? Show us ex- 

 ampies. Wedge-shaped, or cuneate ? Give examples. 



18. Repeat the names of the four leaf-forms broadest at base ;— the four 

 broadest in the middle ; — the four broadest towards apex. 



