1 — 



Introduction i\ 



are above the calyx and ovarj In the lower roses, the number of stamens ami usually of 

 pistils also i- large, and the pistils arc separate. In the higher families, tin pistils arc united 

 into a compound pistil. In the madders and honeysuckles, the petals have l>ecomc united, 

 and finally, in most of the asters, some or all of the flowers of the characteristic heads 

 become irregular as to their petals. In the mustards, pinks, and geraniums, the (lower parts 

 regularly reduced to the number plan of 4 or 5, and the pistils are united, [n the 

 primroses, the petals become united, and in the snapdragons and mints. tl. t corolla as a rule 

 is highly irregular. 



