96 



THE FLORAL ENVELOPS, OR PERIANTH. 

 813 314 315 



Forms of corollas. 812, Cheiranthus (stock). 313, Sileno regia (scarlot catchfly). 314, Pyrus 

 coronaria. 315, Amaryllis (Atamasco lily). 



474. PAPILIONACEOUS, butterfly-shaped ; a corolla consisting of five 

 dissimilar petals, designated thus : the upper, largest, and exterior pe- 

 tal is the banner (vexillum) ; the two lateral, half-exterior, are the wings 

 (alee) ; the two lower, interior petals, often united at their lower mar- 

 gin, are the keel (carina). The flowers of the pea, locust, clover, and 

 of the great family of the Leguminosse in general are examples. 



31G 



316, Papilionaceous flower of the Pea. 317, Displayed ; , the vexillum ; a, a, the ahe; c, c, the 

 carinae. 318, Section of flower of Dicentra Cucullaria. 



475. ROTATE, wheel-shaped or star-shaped, is a monpetalous form, 

 with tube very short, if any, and a flat, spreading border, as the calyx 

 of chickweed, corolla of Trientalis, elder. It is sometimes a little ir- 

 regular, as in mullein. 



476. CUP-SHAPED, with pieces cohering into a concave border, as in 

 the calyx of mallows, corolla of Kalmia, etc. 



477. CAMPANULATE or bell-shaped ; when the tube widens abruptly 

 at base and gradually in the border, as in the harebell, Canterbury bell. 



