96 



THE FLORAL ENVELOPS, OR PERIANTH. 

 818 814 815 



Forms of corollas. 812* Cheiranthus (stock). 813, Silene regia (scarlet catchfly). 814, Pyrus 

 coronaria. 815, 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. 



310 



at; 



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

 earinae. 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, cprolla 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. 



