NOMENCLATURE OF THE LEAF, 09 



Mirbel observes, that the consistence of the fleshy leaf, is that of 

 the apple; of the succulent leaf, that of the plum. Elimens de Phys. 

 veg.iii.p.&tt. 



24. Productions: The leaves of some plants have 

 the singular property of producing spines, leaves, and 

 flowers, and, indeed, of producing plants themselves; 

 from which circumstances, they receive names of specific 

 signification. 



a. Spine-bearing producing spines in the same manner as 

 the stem. 



b. Leaf-bearing when they are productive of other leaves, as in 

 the duck-weed. 



c. Flower-bearing if they bear flowers, as on the leaf-stalk in 

 the turnera cuneiformis, on the upper disk of the leaf in the butcher's 

 broom, and from the serratures of its margin in xylophylla. 



d. Plant-bearing when they throw outroots and produce plants, 

 in every respect resembling the plant to which they belong, as in the 

 cotyledon calycinum. 



NOMENCLATURE OF THE COMPOUND LEAF. 



25. A compound leaf consists of distinct expansions 

 or leaflets, connected either directly or indirectly, and a 

 common foot-stalk, whereas a simple leaf is constituted 

 by one leaflet only. Compound leaves may be simply- 

 compound, doubly-compound, or much-compound. 



When botanists describe plants with compound leaves, they speak 

 of them as having such, and also specify the characteristic marks 

 common to the leaflets of which they are composed. The leallets of 

 compound leaves may, indeed, be regarded as distinct simple leaves ; 

 and most of the terms applied to single leaves, will also be found 

 applicable to leaflets. 



26. Simply Compound: The simple compound leaf 

 consists of a common foot-stalk only, supporting two or 



