436" 



INSERTION OF LEAVES. 



7. Fasciculate, bundled; when many come out from thm 

 same point, as in Larix. 



8. Distich, in two rows; when the leaves all respect tw© 

 sides of the branches only, as in Abies and Diervilla. 



III. In respect to their Insertion (which is usually at the base), 

 leaves are called, 



1. Peltate, shield-fashioned; when the petiole is inserted into 

 the disk of the leaf, and not into its base or margin, as in Nym- 



PH(EA,...HERNANDRIA,...and CoLOCASIA. 



2. Petiolate ; when there is a petiole fastened to the leaf at 

 the margin of the base. 



3. Sessile ; when the leaf has no petiole, but is fastened im- 

 mediately to the stem. 



4. Decurrent, running down ; when the base of a sessile leaf 

 extends itself downwards along the stem beyond the proper base 

 or termination of the leaf, as in VERBEsiNA,..,CARDuus,...aml 

 Sphjeranthus. 



5. Amplexicaul, embracing the stalk; when the base of the 

 leaf embraces the sides of the stem crosswise on both sides ; or 

 Semi amplexicaul, half embracing the stalk; which only differs 

 from Amplexicaul, in that it is in a less degree. 



6. Perfoliate ; when the base of the leaf is continued across 

 the stem till it meets again, so as to embrace it all around, as in 

 Bupleurum. 



7. Connate, growing together; when two opposite leaves join, 

 and are united in one, as in Lonicera and Eupatorium. 



8. Vaginant, forming a vagina orsheatji; when the base of 

 the leaf forms a cylindric tube that invests the branch. 



IV. In respect to their Direction, leaves are calleti, 



