GENERAL OBSERVATIONS AND CONCLUSIONS. 455 



species which are not enumerated below; they are 169 

 in number. 



Among these 169 species, 31 belong to the categories 

 A and D, of very ancient cultivation, 56 have been in 

 cultivation less than two thousand years, C, and the 

 others are of modern or unknown date. 



2. Seen and gathered in the same conditions, but by 

 a single botanist in a single locality. Three species. 



Cucurbita maxima^a&ct vulgaris ) Nicotiana J Tabacu f m. 



3. Seen and mentioned but not gathered in the same 

 conditions by one or two authors and botanists, more or 

 less ancient, who may have been mistaken. Two species. 



Carthamus tinctorius, Triticum vulgar e. 



4. Gathered wild by botanists in several localities 

 under a form slightly different to those which are culti- 

 vated, but which most authors have no hesitation in 

 classing with the species. Four species. 



Olea europcea, Oryzou sativa, Solanum tuberosum, 

 Vitis vmifera. 



5. Wild, gathered by botanists in several localities 

 under forms considered by some botanists as constituting 

 different species, while others treat them as varieties. 

 Fifteen species. 



Allium ampeloprasum porrum, Cichorium Endivia, 

 var., Crocus sativus, var., *Cucumis melo, Cucurbita 

 Pepo, Helianthus tuber osus, Latuca scariola sativa, 

 Linum usitatissimum annuum, Lycopersicum esculen- 

 tium, Papaver somniferum, Pyrus nivalis var., *Bibes 

 grossularia, Solanum Melongena, *Spinacia oleracea var., 

 Triticum monococcum. 



6. Subspontaneous, that is half- wild, similiar to one 

 or other of the cultivated forms, but possibly plants 

 escaped from cultivation, judging from the locality. 

 Twenty-four species. 



Agava americana, Amarantus gangeticus, Amygdalus 

 persica, Areca catechu, *Avena orientalis, Avena sativa, 

 *Cajanus indicus, Cicer arietinum, Citrus decumana, 

 Cucurbita moschata, Dioscorea japonica, Ervum Ervilia, 

 Ervum lens, Fagopyrum emarginatum, Gossypium bar- 

 badense, Holcus saccharatus, Holcus sorghum, Indigofera 



