[ 20 ] 



Leaves, are to be confidered in three Refpeds, 

 Simple, Compound, and Determinate. 



SIMPLE LEAVES. 



TAB. 2 1, 22, 23, 24, 25, 26. 



They are when a Partial (Footflalk) bears only a fingle Leaf, which 

 clit]-eis A\ Refpecl to its Circumfcription as, 



Ancles, Margin, Superficies Apices and Substance. 



ClkCUMSCRIPTIONj confiders the Circurnference without any 

 Sinufes and Angles. 



ANGLES, are the prominent Part of an horizontal Leaf. 



SINUS, Hollows or Cavities that divide the Diik of" a Leaf 

 into Parts ; e.g. Fig. 3. 16. 47. 61. 27. 



MARGIN, is the cxtream Bonndery of a Leaf or its Sides not- 

 including the Dilk of the Leaf. 



SUPERFICIES, the fupine (upper Dillc) or the Prone (under 

 Difk.) of a Leaf. 



A P E X, is the Extremirv of a Leaf in which it terminates. 



S LT B S T A N C E, of a Leaf is to be confidered according to the 

 Condition of its Sides. 



