ni. INTKODUCED SPECIES. 95 



2. Species reputed native in Britain; — with the indications of station from 



Manual, edition 3. 



1. Stellnria media. Corcimon. 



2. jEthusa Cynapium. Cultivated land. 



3. Sinapis alba. Cultivated and waste land. (A. De C.) 



4. Lapsana communis. Waste and cultivated land. 



5. Lamium purpureum. Waste and cultivated ground. 



6. Bartsia Odontites. Corn-fields and waste places. 



7. Cerastium glomeratum. Fields and banks. 



8. Knautia arvensis. Fields. 



9. Chrysanthemum Leucanthemum. Fields. 



10. Cerastium triviale. Fields. 



11. Scleranthus annuus. Sandy fields. 



13. Muscari racemosum. Sandy fields. (A. De C.) 



13. Silene anglica. Sandy and gravelly fields. 



14. Arnoseris pusilla. Gravelly and sandy fields, rare. 



15. Alchemilla arvensis. Dry fields on sand and gravel. 



16. Linum angustifolium. Sandy and chalky places. 



17. Thlaspi ai-\'ense. Fields and road-sides. (A. De C.) 



18. Myosotis arvensis. Cultivated land and thickets. 



19. Arctium minus. Waste places. 



20. Cynoglossum officinale. Waste ground. 



21. Diplotaxis muralis. Waste ground. (A. De C.) 



22. Plantago major. Fields and waste places. 



23. Filago minima. Dry sandy and gravelly places. 



24. Veronica arvensis. Gravelly and sandy places. 



25. Erodium maritimum. Sandy and gravelly places, particularly near 



the sea. 



pose of showing how uncertain may be any conclusions 

 resiiecting the nativity and naturalisation of plants in 

 Britain, which are deduced from such notices and re- 

 cords. It is not because the suggestions of M. De Can- 

 doUe are in themselves deemed to be unphilosophical, 

 that exception is thus taken against their application to 

 the botany of Britain ; but because the data placed on 

 record by other authors, — most of them writing for de- 

 scriptive rather than geographical botany, — are too in- 

 exact and empirical, to admit of that full reliance being 



