LESSON 15.] 



UNION OF PARTS. 



101 



toothed or dentate, when only the tips are separate as short points ; 

 entire, when the border is even, without points or notches, as in the 



common Morning-Glory, and very nearly so in Fig. 203 ; and so 

 on ; the terms being just the same as those applied to leaves and 

 all other flat bodies, and illustrated in Lessons 8 and 9. 



264. There is a set of terms applied particularly to calyxes, 

 corollas, or other such bodies of one piece, to express their general 

 shape, which we see is very various. The following are some of 

 the principal : 



Wheel-shaped, or rotate ; when spreading out at once, without a 

 tube or with a very short one, something in the shape of a wheel 

 or of its diverging spokes, as in the corolla of the Potato and Bitter- 

 sweet (Fig. 204, 205). 



Salver-shaped, or salver-form ; when a flat-spreading border is 

 raised on a narrow tube, from which it diverges at right angles, 



204 205 206 



like the salver represented in old pictures, with a slender handle 

 beneath. The corolla of the Phlox (Fig. 208) and of the Cypress- 

 Vine (Fig. 202) are of this sort. 



FIG. 200. Corolla of Soapwort (the same in Pinks, &c.), of 5 separate, long-clawed petals. 



FIG. 201. Flower of Gilia or Ipomopsis coronopifolia ; the parts answering to the claws 

 of the petals of the last figure here all united into a tube. 



FIG. 202. Flower of the Cypress- Vine ; the petals a little farther united into a five-lobed 

 spreading border. 



FIG. 203. Flower of the small Scarlet Morning-Glory, the five 'petals it is composed of 

 perfectly united into a trumpet-shaped tube, with the spreading border nearly even (or entire). 



FIG. 204. Wheel-shaped and five-parted corolla of Bittersweet (Solanum Dulcamara). 



FIG. 205. Wheel-shaped and five-cleft corolla of the common Potato. 



FIG. 20G. Almost entire and very open bell-shaped corolla of a Ground Cherry (Physalis) 



9* 



