iv WILD AND CULTIVATED TYPES 173 



slightly from their wild congeners, especially when 

 we consider plants which have been cultivated only 

 within recent times. De Candolle 1 shows that out of 

 247 cultivated species, 169 have enough resemblance 

 to some wild species to allow us to trace with exact- 

 ness their origin in the latter. In five cases there is 

 room for doubt ; in four, the cultivated species although 

 unlike the wild one is not different enough to 

 prevent us from tracing its origin ; in fifteen the 

 differences are greater, and the question remains open 

 whether there are here distinct species or mere 

 varieties ; in twenty-four cases wild forms are met 

 which may be cultivated plants which have been dis- 

 persed and have become naturalised ; in three cases 

 the wild and cultivated forms differ to the extent of 

 being considered as distinct species ; in three cases 

 the species are distinct ; in twenty-four the wild form 

 is unknown, but some may yet be recognised after 

 more careful investigation. Upon the whole, then, 

 out of 247 cultivated species of plants 113 exist in the 

 wild as well as in the cultivated state, identical or more 

 or less modified ; twenty-seven are doubtful ; and 

 twenty-seven have not been found growing wild. Such 

 is the result obtained by De Candolle in his valuable 



a large amount of useful information and valuable suggestions are 

 embodied (April, 1892). 



1 Origine dcs Plant es Cultivces, 1883. 



