IMMIGRANT PLANTS IN LOS ANGELES COUNTY. 101 
situation it shows a disposition to spread along the waysides 
and highways. 
Avena fatua, L. Very abundant in some districts and 
always more or less prevalent among volunteer oats. 
Lamarckia aurea, Mcench. First found on this continent 
in 1876, it is now one of the common grasses around Los 
Angeles, 
Arundo Donax, L. Though frequent on the Los Angeles 
river, there is nothing in the distribution that would indicate 
its being indigenous here. So far as I have observed, it never 
either flowers or fruits so that the possibility of its seeds having 
been conveyed by water pipes, as Mr. Parish suggests, must 
be a very unusual occurrence. 
Dactylis glomerata, L. Rare, in lawns and waste places. 
Poa annua, L. Common and most noticeable in the 
spring time as it fruits before the other grasses have well 
begun to grow. All the plants of P. pratensis here observed 
are evidently escapes from cultivation. It is reported how- 
ever as indigenous in the higher mountains. 
Eragrostis pilosa, L. Sparingly represented in many 
parts of the city. In the moist sands of the river bed at Los 
Angeles a few specimens of HZ. major are always to be met 
with. 
Festuca Myurus, L. No native grass so common on hills, 
plains and in cultivated grounds; yet its foreign derivation 
can not well be doubted. F. elatior, L., var. pratensis, Vasey, 
has been introduced with lawn seeds at Santa Monica, accord- 
ing to Dr. Hasse. 
Gastridium australe, Beauv. Common on dry grassy plains. 
Bromus maximus, L. Already frequent in the waste 
grounds throughout the city and rapidly spreading. As a 
fodder plant it is seemingly valueless. 
Bromus rubens, L. Fairly common about Los Angeles, 
as also at Santa Monica and Pasadena, and like the former, 
increasing rapidly. 
Bromus mollis, L.. To the station previously reported by 
