90 NOMENCLATURE Of THE FLOWER. 



any one of them is removed, an irregularity is occa- 

 sioned. 



The most freqnent varieties of the common receptacle, lire those of 

 the dandelion, and chrysanthemum, in which it is dotted ; of the 

 thistle, in which it is hairy ; of the teasel, and scabious, in which it 

 is scaly; and of the cotton-thistle and others, in which it is divided 

 into open cells, like a honey-comb, with a seed lodged in each cell. 

 Flat, conical, convex, and other forms of this receptacle are also to 

 be met with. 



VARIETY OF FLOWERS. 



61. All flowers according to their composition, are 

 said to be either simple or aggregate. 



62. Simple: Simple flowers differ from aggregate 

 flowers, in not having any part of the fructifications 

 common to many florets ; but consisting of a single 

 blossom only. 



The primrose, snowdrop, tulip, violet, convolvulus, and narcissus, 

 have all simple flowers supported on foot-stalks. The garden crocus, 

 the meadow-saffron, and many other plants, have sessile flowers 

 of the same order. 



63. A simple flower furnished with both caljx and 

 corolla, is called a complete flower ; when the corolla is 

 wanting, incomplete ; and when the corolla is present 

 without the calyx, it is termed a naked flower. 



The cowslip, primrose, violet, hearts-ease, and convolvulus, have 

 all complete flowers ; the African galenia, and drooping lizard's tail, 

 incomplete flowers; and the common tulip, a naked flower. 



64. Aggregate : Aggregate flowers are those in 

 which many florets are so connected by some part of the 



