FORMS OF LEAVES. 133 



Triangulares f. 48, triangular, having three prominent 

 angles, without any reference to their raeasureinent 

 or direction, as in the genus Chenopodlum^ (60) 

 Cochlearia damca^ t. 696, and some leaves of the Ivy, 

 Quadranguhwe,/. 49, with four angles, as the Tulip-tree, 

 Liriodendrum tulipifera, (61) Sm. Ins. of Georgia, 

 t. 102. Curt. Mag. t. 275. 

 Quinquangulare, f. 19, with five angles, as some Ivy 

 leaves, Sec. 



Deltoides,/. 50, trowel-shaped or deltoid, having three 

 angles, of which the terminal one is much further 

 from the base than the lateral ones, as Chenopodhim 

 Bonus- Henricus, Engl. Bot. t. 1033, and some leaves 

 of Cochlearia danica. A wrong figure is quoted for 

 this in Phiiosophia Botanica^ which has caused much 

 confusion. 



Rhombeum, / 51, rhomboid, or diamond- shaped, ap- 

 proaching to a square, as Chenopodium olidum, t. 

 1034, Trapa ?iata?is, Camer. Epit. 715, and Trillium 

 erectum. Curt. Mag. t. 470.(62) 



ReniformeJ. 52, kidney-shaped, a short, broad, round- 

 ish leaf, whose base is hollowed out, as Asariim euro- 

 pmwi, Engl. Bot. t. 1083, and Sibthorpia europxa, t. 

 649.(63) 



Cordatum,/. 53, heart-shaped, according to the vulgar 

 idea of a heart ; that is, ovate hollowed out at the 

 base, as Tamus convnunis, t.9l.[6i) 



(60) [Goosefoot or Hogweed.] 



(61) [One of the most elegant of North American trees.] 



(62) [Native.] 



(63) [Likewise Glecoma hcderacea. Ground Ivy.] 



(64) [Also, the common annual Sunflower, many Violets, As. 

 ters, &c.] 



