JO An IntroduSiion to 



A compound leaf when properly under- 

 flood, is one which is produced from a fingle 

 compofition. 



A fingered or handed leaf {digitatum) is 

 one compofed of fevcral fmall leaves fitting on 

 the top of a common footftalk, but in a ftridl 

 fenfe it (hould be compofed of more than foui^ 

 fmall leaves, as the Agnus CaftuSy or Chajlt 

 TreCy fee fig. i . 



A trifoliate leaf {fernafum) is one compofed 

 of three fmall leaves ftanding upon one com- 

 mon footftalk, as the Alpine Ladies Smock^ fee 

 fig, 2. when thefe have no proper footftalk, 

 it is termed (foliolis fejjilibus) but when each 

 has a proper footftalk (foliolis petiolatis). 



When a leaf is compofed of two lobes {bi- 

 natum) thefe fit upon a common footftalk, as 

 in the Pajfijlora bilobis, fee fig. 3. 



When it has many fmall leaves branching 

 upon a common footftalk, it is called a branch*- 

 ing leaf (ra??iofujn) fee fig. 4. 



A w^inged leaf (^innatiirri) is compofed of 

 many fmall leaves, ranged along on each fide 

 the common footftalk like wings, as the Water- 

 crefs ; but as thefe are ranged in different man- 

 ners, fo they have different appellations, viz. 



When it is terminated by a fingle lobe or 

 little leaf^ it is an unequal winged leaf, {impart^ 



^innatum) 



