FORMS OF LEAVES. 1 19 



Pinus, Juniper, Juniperus communis, t. 1100, 

 and Yew, Taxus baccata, t. 746. Linneeus 

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

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

 the branch. 



Triangulare, f. 48, triangular, having three pro- 

 minent angles, without any reference to their 

 measurement or direction, as in the genus Che- 

 nopodium, Cochlearia danica, t. 696, and some 

 leaves of the Ivy. 



Quadrangultire, f. 49> with four angles, as the 

 Tulip-tree, Liriodendrum tidipifera, Sm. Ins. of 

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



Quinquangulare, f. 19, 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- Henric us, 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. \ 034, Trapa natans* Corner. Epit. 7 \ 5, and 

 Trillium erectum, Curt. Mag. t. 470. 



lleniforme> f. 52, kidney-shaped, a short, broad, 

 roundish leaf, wkose base is hollowed out, as 



