Classification. xlvii 



(3.) In some genera of Amarantaceae there are staminodes 

 looking like petals. 



(4.) Plants with highly coloured flowers are to be found in 

 Nyctagineae, Thymeleacese, Loranthacese, and Santalaceae. 



(5.) The last order (Grnetacese) differs from all the rest in the 

 male flowers consisting of a single stamen and the females of 

 a naked ovary, with scarcely anything else distinguishable. 



Note. " Themonochlamyds form a class neither natural nor well- 

 defined ; many of the orders with little affinity among themselves 

 approach more nearly to some of the polypetalous orders. Many 

 learned botanists have tried to distribute these orders among the 

 Polypetalse, but no batter system than De Candolle's has yet been 

 discovered." Genera Plantarum. 



VI. B. ENDOGENS. 



Stems herbaceous, rarely with woody stock, leaves parallel- 

 veined. Perianth generally in two series. Stamens in one or 

 two series. Parts of the flower generally 3 in each series. 



Exceptions. (1.) Order Dioscoracese, and tribe Smilaceae of 

 order Liliacese, have reticulated leaves. 



(2.) Order Scitamineae have leaves pinnately nerved from 

 the midrib. 



(3.) Order Orchideae has stamens and style united in a column, 

 and perianth remarkably irregular. 



(4.) Many of the orders, particularly those towards the end, 

 have no perianth, and are otherwise very imperfect. 



The one hundred and twenty-seven orders described in this 

 book are thus grouped into five divisions of Exogens, and one 

 of Endogens; and it will be found that the Monopetalous 

 Exogens contain as many species as any two of the other 

 divisions put together. 



