92 NOMENCLATURE OF THE FLOWER. 



68. The florets which constitute a compound flower, 

 may be of two kinds ; ligulate, shaped like a strap or 

 riband, with three or five teeth ; or tubular, in tliu 

 form of a tube. 



The marginal florets of the 6th figure, (or of the daisy), ate of the 

 ligulated description (F. 7.), and compose its radii or rayg; and 

 the yellow central ones (F. 6. ).come under the tabular denomination, 

 constituting its discus or disk. 



69. All flowers, as well as florets, have received sys- 

 tematic names, according to the presence or absence of 

 the stamens and pistils. 



It is requisite to understand the varieties depending on these 

 grounds, because the terms derived therefrom, are necessarily much 

 used in the artificial system of Linnaeus, and the knowledge of that 

 system will be made more easy of comprehension. 



70. When the stamens and pistils are both, as usual, 

 in one flower, it is called perfect or united ; when they 

 are situated in different flowers of the same species, 

 such have been called separated flowers ; those which 

 have the stamens being named the barren flowers, as 

 producing no fruit in themselves, and those with the 

 pistils, the fertile flowers, as bearing the seed. 



The tulip, hearts-ease, primrose, violet, cowslip, and most plants, 

 hare perfect flowers; the Indian corn, common alder, common 

 nettle, common mulberry, and the tribe of sedges, have both barren 

 and fertile flowers on the same species of plant ; whereas the tribe 

 of willows, the common hop, and the black bryony, have barren 

 flowers on one plant, 'and fertile flowers on another of the same 

 species. 



71. There arc numerous other torms applied t 



