CHAPTER II 



APETAL^E (MONOCHLAMYDEiE AND 

 AGHLAMYDEiE) (SUMMARY). 



{Introductory Volume^ p. 173.) 



ANOTHER name for this division, recognised 

 by Bentham and Hooker, is Incompletae. 

 This implies that the floral mechanism lacks some 

 members, not being as in Polypetalae and Gamo- 

 petalae complete, with a corolla and a calyx. 



The name Apetalae denotes that the corolla is 

 absent. The calyx also is absent in many cases. The 

 absence of either is, however, not a natural distinction, 

 and in Engler's new system (t>?V/d Appendix) this defect 

 of the present system is largely remedied. More- 

 over there are many types of Polypetalai that exhibit 

 a similar characteristic, as in some Ranunculaceae, 

 Cruciferae, Violaceae, Caryophyllaceae, Rosaceae, 

 Saxifragaceae, Haloragaceas, Lythraceae, and Ona- 

 gracese. Amongst Monopetalae or Gamopetalae also, 

 where, as a rule, the flowers are dichlamydeous, 

 the corolla may be absent in some of the Oleaceae 

 and Primulaceae. Moreover, in lUecebracese the 

 petals are present, though small. 



The names Monochlamydeae and Achlaniydeai 



