FORMS OF LEAVES. 154 



the most part, a joint at its union with 

 the branch. 

 Triaufrularc^f, 48, triangular, having three 

 prominent angles, without any reference 

 to their measurement or direction, as 

 in the genus Chcnopodiuni, Coclikaria 

 donka, t. 696, and some leaves of the 

 Ivy. 

 Qaadrangularc, f. 49, ^vith four angles, 

 as the Tulip-tree, Liriodendriim tulipi- 

 fera, Sm. I/is. of Georgia, f. 102. Ciut, 

 Alog. t. 215, 

 QuinquanQ:ularc,f, 19, Vvith five angles, as 



some Ivy leaves, &:c. 

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

 having; three angles, of which the termmal 

 one is much further from tlie base than 

 the lateral ones, as Clicnopodium Boniis- 

 Henricus. Engl. Bot. t. 1033, and some 

 leaves of Coclikaria danica. A wrong 

 figure is quoted for this in P/iilosophia 

 Botanica, which has caused much con- 

 fusion. 

 Bhombeum, f. 51, rhomboid, or diamond- 

 shaped, approaching to a square, as 

 Chenopodium olidiun^ f. 1034, Trapa 



