VARIETIES, 



47* 



derive their origin from natural ones, therefore are to be consi- 

 dered only as a variety from luxuriance. 



Upon the whole, the change of soil is found to have a great ef- 

 fect on the nature of plants ; and to this many of the varieties 

 above mentioned must be imputed ; as in Buxus,... Xanthium,... 

 Acanthus, . . .Cinara,...Prunell a, . . .Myosotis, . . .Crista Galli, . . . 

 and Cerinthe*; which would all return to their old conditions if 

 the soil were changed again: and in like manner the improve- 

 ments which are made by culture in the plants cultivated for 

 sale, as in Vitis,... Malum,. ..Pyrus,...Amygdalus,...Persica,... 

 Asparagus,... Cerasus ; and in grain, pulse, and fruit of all kinds, 

 are not to be esteemed as lasting : for all these, if left to them- 

 selves in a poor soil, would run off again, and resume the qualities 

 they had when they grew wild. 



The Soil has some effect also upon leaves; for though it is less 

 common for the leaves to differ on the same plant, as they do in 

 some species of Lepidi.um, ...Tithymalus, ... Rudreckia, ... and 

 HiEiscusf; yet it is observed, that watry soils are apt to produce 

 a division in the lower leaves of the plant, and even to render ca- 

 pillary such as are produced under the water, as in some species 

 of Ranunculus and Sisymbrium!; and also in Cicuta,...Sium,... 

 Phellandrium....(Enanthe, &c>: and on the contrary, that 



* Buxus arborescens (C.B.J Buxus humilis (Dod.J 



Xanthium fDod.J Xanthium Canadense majus (Tourn.J 

 Acanthus mollis (C. B.J Acanthus aculeatus (C. B J 

 Cinara actdecta (C. BJ Cinara non aculeata (C. BJ 

 Brunella (DodJ Brunella cceruleo magna fore (C. BJ 

 Myosotis foliis hifstitis (H. CJ el foliis glalris (H. Cj 

 Crista Galli feemind (J.B.J etmas. (J.B.J 



Cerinthe Jiore ex rubro purpurascente (C.B.J el fiavo fore asperior (C. B.J 



Author. 



f Tithymalus heterophyllus (Plum. Pluk. Aim. 112. f. Q.J 



RuDBECKiA^fos inferioribus trilobis, superioribus indivisis (Hort. Upsal.J 

 Hibiscus foliis inferioribus integris, superioribus trilobis (Hort. Cliff.J 

 Lepidium foliis cdulinis pmnato-muliifidis, rameis cotdatis amplexicaidibus 

 integris (H. C.J Author. 



X Ranunculus aquaticus folio rotimdo et capillaceo (C. BJ 



Sisymbrium foliis simplicibus dentatis serratis (H. CJ Author, 



