INTRODUCED PLANTS. 165 



5. Medicago minima, L. 



Not mentioned among California plants, but probably growing 

 there. As a plant of Southern Europe and Oriental Asia, it 

 may possibly have reached our locality with Turkish wool. 



6. Trifolium Macrsei, H. & A. 



ONAGRACE^. 



7. Clarkia rhomboiclea, Dougl. 



8. (Enothera bistorta, Nutt. 



Abundant. 



(Enothera bistorta, Nutt., var. Veitchiana, Hook. 

 Rare. 



COMPOSITE. 



9. Bseria tenerrima, Gray. 



10. Basria uliginosa, Gray. 



11. Chaenactis glabriuscula, Z>. (7. 



12. Hemigonia ramosissima, Bentli. 



13. Hypochseris glabra, L. 



14. Layia platyglossa, Gray. 



Much at home. Having a prettily colored daisy -like flower. % 



15. Matricaria discoidea, D. C. 



" Apparently indigenous on the Pacific coast." 

 " Established in Northern Europe." 



16. Microseris Douglasii, Gray. 



Concerning this plant, Dr. Watson wrote me in 1879 : "A very 

 rare species having been collected only by Douglas himself, 

 over forty years ago." 



17. Xanthium spinosum, L. 



" Introduced from Chili" into California, doubtless by sheep. 

 Tropical America and Southeastern United States. 



18. Xanthium struinarium, L. 



Originally from Europe. Occasionally found in Eastern Massa- 

 chusetts. 



SCROPHULARIACE^. 



19. Mimulus brevipes, Benth. 



20. Orthocarpus purpurascens, Benth. 



LABIATE. 



21. Marrubium vulgare, L. 



From Europe. 



BORRAGINACE.E. 



22. Amsinckia spectabilis, F. & M. 



Very abundant. 

 12* 



