VOL. IV.] Flo7'a of Bouldin Island. 21 



v) 



tember 6 and 7, 1892, and of a single day early in July of the 

 present year. An inspection of other islands would undoubtedly 

 add other introduced plants not yet known to our flora. It is 

 not intended to be complete even for the flowering plants and 

 ferns, but is approximately so. Those which are credited to our 

 flora for the first time are marked =--. There remain as yet 

 unidentified several which are plainly not native. 



Brasema peltata Pursh. The Slough in the centre of the 

 island. 



Nuphar polysepalum Engelm. The same localitJ^ 



Sisymbrium officinale Scop. 



Nastartiiun ciirvisiliqiia Nutt. 



Capsclla Bursa- Pastoris L. 



Sileiie Gallica L. 



Stellaria media L. 



Portulaca oleracea L. 



'^Hypericitin nuttilum L. 



Hibiscus lasiocarpus Cav., H. Californicus Kell. About the 

 banks of levees and sloughs. There seems to be no reason to 

 consider it indigenous. 



Malva parviflora L- 



Trifolium repens L. Very common. T. pratense is one of 

 the staple crops. 



Melilotus parviflora Desf. 



Medicago saliva ly. 



Hosackia subpinnala T. & G. 



Psoralca )iiacrosiaehya DC. 



Lalhyrus venosus var. Californicus Wats. 



Rosa Californica Ch. & Schl. 



Rubiis ursinus Ch. & Schl. 



Potentilla rivalis Nutt. 



Ly thrum albicaulis Bert., L. Sanfordi Greene. 



Jussicea 7'epens L,. 



