30 Naturalized Plants. 
_ Medicago denticulata. 
Pastinaca sativa. 
Peucedanum graveolens. 
Dipsacus fullonum. 
Scabiosa atropurpurea. * 
Melampodium perfoliatum. 
Xanthium Canadense. 
spinosum. 
Verbesina encelioides. 
Bidens pilosa. 
Anthemts Cotula. 
Cotula coronopifolia. 
australis. 
Senecio sylvaticus. 
Cnicus edulis. 
Silybum Marianum. 
Centaurea solstitialis. 
melitensis. 
Sonchus oleraceus. 
asper. 
tenerrimus. 
Anagallis arvensis. 
Ipomea purpurea. 
Amarantus retroflexus. 
chlorostachys. 
albus. 
Chenpodium murale. 
ambrostoides. , 
Urtica urens. 
Ricinus communts. 
Sagittaria Chinensis. 
Panicum sanguinale. 
Crus-gallt. 
Phalaris Canariensis. 
Polypogon Monspeliensis. 
Cynodon Dactylon. 
Avena fatua. 
Lamarkia aurea. 
Arundo Donax. 
Poa annua. 
Eragrostis pilosa. 
festuca Myurus. 
Bromus maximus. 
rubens. 
Lolium temulentum. 
Hordeum murinum. 
Convolvulus pentapetaloides. Sorghum halepense. 
There are in the above list 78 species, belonging to 59 genera, 
and representing 23 natural orders, the most numerous being the — 
Composite and the Graminee with 16 species each, and next 
the Cruciferae with 7 species. ee 
The species are not unequally divided between those which are 
widely diffused and numerically abundant, of which there are 43) 
and those which are more or less restricted in habitat, of which 
there are 35 species. In the table the former are printed in Italic, 
and the latter in Roman type. 
In Brewer and Watson’s Botany of California 46 of these species 
are reported as growing in the southern part of the State, and nine © 
others at stations north of our limits, so that twenty-three species 
remain whose presence in California was not known at the time 
that work was published. A few of these certainly were growing 
here at that time, but by far the greater number, probably nearly 
