IMMIGRANT PLANTS IN LOS ANGELES COUNTY. 99 
Mentha piperita, L. A garden escape, established in a 
few wet places near the river. 
Plantago major, L. Generally diffused but nowhere abun- 
dant. 
P. lanceolata, L. Apparently confined to the streets of 
Los Angeles and Pasadena, in a few of which it is quite 
abundant. 
Phytolacca decandra, L. One plant found at Santa Monica 
by Dr. Hasse. 
Polygonum aviculare, L. A very common weed along the 
roadsides and beaten pathways throughout the city and 
rarely met with outside its limits. 
P. nodosum, Pers. Abundant along streams and ditches. 
P. incarnatum, Ell. Some specimens apparently referable 
to this have been found growing along with P. nodosum, but 
further research is necessary to fully establish its identity. 
Rumex crispus, L. The only representative of this pro- 
lific tribe and at present not very common. 
R. Acetosella, L. I first observed a few plants on Orange 
Ave. Pasadena, last spring, and the same autumn in the 
lawns at Long Beach. In the lighter and less fertile soils 
of Europe, by its rapid growth from a running rootstock, 
this has proved a very injurious weed, and if it find a foot- 
hold it may prove no less troublesome here. 
Amarantus retroflexus, L. A prevalent weed in cultivated 
grounds. 
A. albus, L. Frequent on slightly alkaline soils. 
Alternanthera achyrantha, R. Br. Apparently well estab- 
lished in a few places in the streets and lawns near the Sixth 
Street Park. By its creeping habit, rooting as it does at 
every node, the maintenance of its foothold and the increase 
of its range are assured. 
Chenopodium album, L. Very common in sandy soils. 
C. viride, L. Rare, on the river bank at Fruitlands and 
Elysian Park. 
C. murale, L. Very common round walls and fences in all 
our towns and villages. 
