FORMS OF LEAVES. 1 19 



Plnus, Juniper, Juniper^ns communis, t. 1100, 

 and Yew, Taxus haccata, t. 746. Linnaeus 

 observes, FhlL Bot. 219, that this kind of leaf 

 has, for the most part, a joint at its union with 

 the branch. 

 Triangulares f. 48, triangular, having three pro- 

 minent angles, without any reference to their 

 measurement or direction, as in the genus Che- 

 nopocUum, Codilearia danica, t. 696, and some 

 leaves of the Ivy. 

 Quadrangulare, f. 49, ^vith four angles, as the 

 Tulip-tree, Liriodendrwn tulipifera, Sm. Ins. of 

 Georgia, t. 102, Curt. Mag. t. 275. 

 Quinquangiilare, f. 19i with five angles, as some 



Ivy leaves, &c. 

 Deltoides, f. 50, trowel-shaped, or deltoid,, having 

 three angles, of which the terminal one is much 

 further from the base than the lateral ones, 

 as Chenopodium Bonus-Henricus, Engl. Bot. 

 t. 1033, and some leaves of Cochlearia da- 

 nica. A wrong figure is quoted for this in Phi- 

 losophia Botanica, which has caused much con- 

 fusion. 

 Rhombeum, f. 51, rhomboid, or diamond-shaped, 

 approaching to a square, as Chenopodium olidum, 

 t. 1 034, Trapa nutans, Camer. Epit. 7 1 5, and 

 Trillium erectum, Curt. Mag. t. 470. 

 Reniforme, f. 52, kidney-shaped, a short, broad, 

 roundish leaf, whose base is hollowed out, as 



