142 ERYTHEA. 
additions to our flora, so far as soil and climate go, are 
almost unlimited. 
The following notes were made principally during July 
and August, 1892. Several of the species are for the first 
time recorded as occurring in middle California or on the 
Pacific Coast of North America. 
Melilotus alba, Lam. grows in Big Valley, Lake County, 
and also near Ukiah. It reaches a height of twelve feet in 
moist lowlands. Roubieva multifida (Linn.) Mog. is natur- 
alized in the town of Vacaville. It also grows abundantly in 
certain places on the sand hills of San Francisco. Phytolacca 
decandra, Linn., the Common Poke or Pigeon Berry of the 
eastern and southern United States, I found in August, 1892, 
on the Blue Lakes grade to Ukiah. Coronopus didymus 
(Linn.) Smith, has established itself in the grainfields of the 
Montezuma Hills near Bird’s Landing. It has not been hith- 
erto reported from the interior. Near Fairfield, Solano 
County, Scabiosa atropurpurea, Linn., the Sweet Scabious of 
the gardens, has become spontaneous in uncultivated places. — 
I also found it near the Montezuma school in the same 
county, and it is common in the streets of Berkeley and prob- 
ably in many other towns. 
In 1886, Professor Greene detected near Vacaville one of 
the Old World Star-Thistles, Centaurea Calcitrapa, Linn. It 
has since spread a short distance along country roads and 
over uncultivated plots of ground. It is not known from any 
other station in North America except as a ballast-weed at 
Atlantic sea-ports. Associated with it is Centaurea solstitalis, 
Linn., previously known from various localities southwards. 
In the same region also is Lactuca Scariola, Linn., not in- 
frequent by roadways. I first saw it four years ago, and it 
has been reported since from towns near the Bay of San 
Francisco. Artemisia biennis, Willd., is thoroughly estab- 
lished at West Berkeley near the Powder Works. 
In August, 1892, I found Datura Stramonium, Linn., near 
a deserted saw-mill on Elk Mountain, Lake County, at an ele- 
vation of at least three thousand feet. Verbascum Blattaria, 
