roll FORMS AND QUALITIES. 41 



is also called circimiatus, when we speak of threads and fine 

 tubes. 



The opposite of all the various bendings is plain or evefi 

 (planus'), (30.) 



VII. Simplicitf/, or Composition of the Parts. 



45. 



A part is called simple (simplea:), either when it is not di- 

 vided into separate parts, or when it proceeds without inter- 

 ruption ; or, lastly, ; when it has certain subordinate parts 

 placed only in one row. 



Simple stalks are thus opposed to the branched ; simple 

 lines to those that are articulated ; simple covers, or calyces, 

 to the double or threefold, as also to the scaly. 



46. 



With respect to composition, we remark the following kinds 

 in the leaves. 



A leaf is said to be compound (compositum), when it con- 

 sists, generally, of several distinct parts, which have a com- 

 mon stalk, or point of insertion. A simple leaf may be 

 deeply lobed, without being on that account compound, pro- 

 vided the substance of the leaf is still united in the base. 

 Hence there are transitions from the folium palmatum, or 

 hand-shaped, to the finger-shaped or digitatum. When two 

 leaves stand together on a common leaf-stalk, they are said to 

 be binate {hinatum^j or conjugate (jconjugatum), as in the 

 genus Zygophyllum. When three of them stand on a com- 

 mon leaf-stalk, the leaf is said to be ternate (jternatum), as in 

 clover. When there are five, they form the quinate leaf {qui^ 

 natum). When there are seven, they form the septinate 

 leaf (septinatum). The two latter are said to be fingered 

 (digitatum). 



