TERMS USED IN DESCRIBING THE FLOWER 183 



Stiyma 



to note union between similar members, as sepal to sepal or 

 petal to petal. Adhesion is used to note union between dissimi- 

 lar members, as sepals to petals, stamens to petals, c. 



Calyx. The sepals which form the calyx may be separated 

 from each other, or may grow together by their edges to 

 form a cup. If the sepals are distinct, as in the calyx of the 

 Buttercup, the calyx is said to be polysepalous. (Fig. 163). If 

 the sepals are united so as to form a cup the calyx is gamose- 

 palous, as in the 

 Deadnettle and 

 Primrose. (Fig. 

 182). 



When the ca- 

 lyx is fixed below 

 the pistil it is 

 inferior, as in 

 the Wallflower 

 and Buttercup. 

 (Fig. 163). If the 

 calyx is above 

 the pistil it is 

 superior, as in 

 the Currant and 

 Parsley. (Fig. 



195)- 



The number 

 of the sepals is 

 noted and the 

 number of 

 whorls they 



make. In the gamosepalous calyx the number of the sepals 

 can be inferred from the number of the divisions to be 

 made out. If there are five lobes to the calyx it is a five-lobed 

 calyx, as in the Primrose and Toadflax. The number of rows 

 of the sepals must also be noted in describing the calyx. There 

 may only be one row, as in the Buttercup, or two, as in the 

 Wallflower. The shape of the sepals or lobes of the calyx is of 

 importance. The sepals may be shaped like the leaves, (p. 38-40), 

 and the same terms are used in describing both. The limb or 

 free portion of the calyx may be entire, toothed, or lobed. The 



Perianth 



FIG. 196. A longitudinal section of the flower of the White 

 Lily ; showing superior ovary and inferior perianth. 



