272 INDEX I. 



PAGE 



the leaves of forest trees. Typically re- 

 presented by those of the oak. 



IV. ABIETINE. — Shaft or sword-shape, as the 



leaves of firs and pines. 



V. CRESSIC. — Delicate and light, with smooth 



tissue, as the leaves of cresses, and 

 clover. 



VI. Salvian. — Soft and woolly, like miniature 



blankets, easily folded, as the leaves of 

 sage. 



VII. CAULINE. — Softly succulent, with thick 

 central ribs, as of the cabbage. 



VIII. ALOEINE. — Inflexibly succulent, as of 

 the aloe or houseleek. 



No rigid application of these terms must ever 

 be attempted; but they direct the attention to 

 important general conditions, and will often be 

 found to save time and trouble in description. 



IV. The Flower. 



Its general nature and function 73 



Consists essentially of Corolla and Treasury . . 88 

 Has in perfect form the following parts : — 



I. THE TORUS. — Not yet enough described 

 in the text. It is the expansion of the 



