FLOWERS : TIIEIK FOKMS AXD KINDS. 



67 



Morning- Glory, the Lily (Fig. 1-12), and the Stonecrop (191), they will soon 

 learn to understand it in any or all of its diverse forms. The jirincipal varieties 

 or special forms that occur among common plants will be described under the 

 families, in the Flora which makes the Second Part of this book. There stu- 

 dents will learn them in the easiest way, as they happen to meet with them in 

 collecting and analyzing plants. Here we will only notice the leading Kinds of 

 Variation in flowers, at the same time explaining some of the terms which are 

 used in describing them. 



201. Flowers consist of sepals, petals, stamens, and pistils. There may be few 

 or many of each of these in any particular flower ; these parts may be all separate, 

 as they are in the Stonecrop ; or they may be grown 



together, in every degree and in every conceivable 

 way ; or any one or more of the parts may be left 

 out, as it were, or Avanting altogether in a particular 

 flower. And the parts of the same sort may be all 

 alike, or some may be larger or smaller than the 

 rest, or differently shaped. So that flowers may be 

 classified into several sorts, of which the following 

 are the princij)al. 



202. A Complete Flower is one which has all tlie 

 four parts, namely, calyx, corolla, stamens, and pis- 

 tils. This is the case in all the flowers we have 

 yet taken for examples ; also in Trilliimi (Fig. 138, 

 reduced in size, and here in Fig. 162, with the 

 blossom of the size of life, and spread open flat). 



203. A Perfect Flower is one wliich has both sta- 

 mens and pistils. A complete flower is of course a 

 perfect one ; but many flowers are perfect and not 

 complete ; as in Fig. 163, 164. 



204. An Incomplete Flower is one which wants at 

 least one of the four kinds of organs. This may 

 happen in various ways. It may be 



ApetaloUs ; that is, having no petals. This is the 

 case in Anemony (Fig. 163), and Marsh-Marigold. For these have only one row 

 of flower-leaves, and that is a calyx. The petals which are here wanting appear 



Complete flower of Tiillium. 



Incomplete flower of Anemony, 



