COMPOUXD LEAVES. 139 



all apply to the mode, as well as the degree, in 

 which leaves are compounded. 

 Pedatum,/. 1 14, pedate, is a peculiar kind of leaf, 

 being ternate, with its lateral leaflets compounded 

 in their fore part, as Helleborus fcctidus, Engl. 

 Bot. t.6\3, and H. niger, Curt. Mag. t. 8. 

 There is an affinity between a pedate leaf and 

 those simple ones which are three-ribbed at the 

 base, p. 1^8. See also the disposition of the 

 lateral veins in Aristoloqhia ClematitiSj Engl. 

 Bot. t. 398. 



In compound'ng the foregoing terms we must take 

 care not to express a contradiction. Thus the leaves 

 of many Mimoscr, as the purpurea, Andr. Repos. 

 t. 37 '2, and sensittva, are conjugata pinnata, conju- 

 gate in the first instance, pinnate in the next, not con- 

 jugato-pinnata, of an intermediate nature between 

 conjugate and pinnate, which is impossible. Neither 

 are the leaves of Mimosa pudica digitato-pinnata, 

 for there is no medium between the two terms; but 

 they are digitate, or composed of leaflets proceeding 

 from the top of a common foot-stalk, and those leaflets 

 are pinnate. On the other hand ovato-lanceolatum, 

 lanceolate approaching to ovate, or eWptico-lanceola- 

 tuiUy approaching to elliptic, as in the Privet, Engl. 

 Bot. t. 764, whose leaves often assume that shape, 

 are easily understood. 



