INDEX. 237 



PAGB 



their forms are infinite and indescribable except by the pen- 

 cil. I will give central types of form in the next volume of 

 Proserpina ; which, so that the reader sees and remembers, 

 he may aill anything he likes But it is necessary that 

 names should be assigned to certain classes of leaves which 

 are essentially different from each other in character and tis- 

 sue, not merely in form. Of these the two main divisions 

 have been already given : but I will now add the less impor- 

 tant ones which yet require distinct names. 



I. APOLLINE. Typically represented by the laurel 39 



II. ARETHUSAN. Represented by the alisma. . , 40 



It ought to have been noticed that the character of serra- 

 tion, within reserved limits, is essential to an Apolline leaf, 

 and absolutely refused by an Arethusan one. 



III. DRYAD. Of the ordinary leaf tissue, 'neither manifestly 

 strong, nor admirably tender, but serviceably consistent, 

 which we find generally to be the substance of the leaves of 

 forest trees. Typically represented 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 attempt- 

 ed ; but they direct the attention to important general condi- 

 tions, and will often be found to save time and trouble in 

 description. 



IV. THE FLOWER. 



Its general nature and function 4P 



Consists essentially of Corolla and Treasury 58 



Has in perfect form the following parts : 



I. THE TORUS. Not yet enough described in the text. It is 

 the expansion of the extremity of the flower-stalk, in prepara- 

 tion for the support of the expanding flower 50-154 



