VOL. IV. | Flora of Bouldin Island. 213 
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. 
Brasenia peltata Pursh. The Slough in the centre of the 
island. 
Nuphar polysepalum Engelm. The same locality. 
Sisymbrium officinale Scop. ~ 
Nasturtium curvisiliqua Nutt. 
Capsella Bursa-Pastoris \. 
Szlene Gallica I. 
Stellaria media 1,. 
Portulaca oleracea I,. 
* Ly pericum mutilum VL. 
Hibiscus lastocarpus Cav., H. Californicus Kell. About the 
banks of levees and sloughs. There seems to be no reason to 
consider it indigenous. 
Malva parviflora VL. ‘ 
Trifolium repens L. Very common. 7. pratense is one of 
the staple crops. 
Melilotus parviflora Desf. 
" Medicago sativa I. 
Hosackia subpinnata T. & G. ’ 
Psoralea macrostach rya DC. 
Lathyrus venosus var. Californicus Wats. 
Rosa Californica Ch. & Schl. 
Rubus ursinus Ch. & Schl. 
Potentilla rivalis Nutt. 
Lythrum albicaulis Bert., L. Sanfordi Greene. 
Jussiea repens I. 
