GENEEAL OBSERVATIONS AND CONCLL^SIONS. 455 



species which are not enumerated below; they are 1G9 

 in number. 



Among these 169 species, 81 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 niaxima,i^a6a vulga ris, Kicotiana Tabacum. 



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 tincforius, Triticmn vidgare. 



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 eurojxea, Oryza sativa, Solanum tuberosum, 

 Vitis viiiifera. 



5. Wild, gathered by botanists in several localities 

 under forms considered by some botanists as constituting 

 different sjDecies, while others treat them as varieties 

 Fifteen species. 



Allium ampeloprasum porrum, Cichorium Endivia, 

 var., Ci'ocus sativus, var., *Cucumis melo, Cucurbita 

 Pepo, Helianthus tuberosus, Latuca scariola sativa, 

 Linum usitatissimum annuum, Lycopersicum esculen- 

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

 grossularia, Solanum Melcngena, *Spinacia oleracea var., 

 Triticura 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 

 IJersica, Areca catechu, *Avena orientalis, Avena sativa, 

 *Cajanus indicus, Cicer arietinum, Citrus decumana, 

 Cucurbita moschata, Dioscorea japonica, Ervum Ervilia, 

 Ervwin lens, Fagopyrum emarginatum, Gossypium bar- 

 badense, Holcus saccharatus, Holcus sorghumi, Indigofera 



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