THE LEAVES. 



29 



(foliola). The petiole of a compound leaf is tlie common petiole {p. comwiunis), aad 

 that of each leaflet is apeholule {petiolulus). 



109. Maple. Paliiiately-lobed teat. 



110. Turnip. Lyrate leaf. 



112. Chelidonium. Pennilobecl leaf. 



A leaf is simply compound, when the leaflets, whether petiolulate or not, spring, 

 directly from the common petiole ; and, according to its nervation, the leaf is 



111. Hellebore Pedateleaf. 



113. Herb-Eobert, Palmatiseot leaf . 



114. Eflbinia. Pinnate leaf. 



pimnate (/. pinnatum, Rohinia, fig. 114) or digitate (/. digitatum, Horse-chestnut, 

 fio-. 116 J Lwpim., fig. 116). When there are but few leaflets, their insertion must 



