8 Naturalized Plants. [ ZOE 
two species of Erodium, indiscriminately known as “ Alfileria,” 
easily hold the first place. There is, however, a considerable dif- 
ference in respect to the extent to which they have established 
themselves. Every western collector, from the Mexican to the Do- 
minion line, finds £. cicutarium in abundance. Indeed, Brewer and 
Watson* incline to regard it as a native, and in his Bibliographical 
Index Dr. Watson prints it in ordinary type as an indigenous 
species. Dr. Trelease,} the latest monographer of the order, has no 
hesitation in pronouncing it an introduction. And it is easy to ac- 
cept this view when it is considered how admirably the seed is 
adapted for conveyance in the fleece of sheep. Indeed, it rather 
would have been strange had it not been brought over by the 
Spanish flocks, or carried wherever their successors have wandered. 
But £. moschatum, which has a seed essentially the same, has not 
established itself as widely as its companion. Few references to it 
are found in botanical reports. It does not appear to have been 
found by the botanists of the Mexican boundary, but first appears 
in the collection of the Pacific Railroad Survey.{ The Botany of 
California returns it only from Los Angeles and Santa Inez Valley. 
Dr. Palmer got it below our boundary on Guadalupe Island§ and 
on the adjacent mainland, at San Quintin Bay.||_ Prof. Greene has 
also collected it at the former station,{ and on San Miguel Island++ 
in the Santa Barbara channel. Professor Brewer does not even 
enumerate it in his exhaustive account of the Foreign Plants of the 
United States for the tenth census. {ft These reports indicate that it 
is mostly confined to the southeen extremity of the State. Dr. 
Trelease indeed calls it a mere ‘‘ roadside weed.’”’ On the red-clay 
foothills of the San Bernardino Valley it, however, grows in great 
abundance, and so luxuriant as sometimes to be cut for hay. On 
these hills it is much commoner than its congener. On black adobe 
soil it is much less abundant, and on sandy ones very scarce. £. 
cicutarium nearly reverses this distribution, but its preferences of 
soil are less pronounced, and this may have aided in its wider dif-| 
“Bot, Cal. I, oa, tN. A. Geran., 81. 
{Torrey, Pac. R. R. Rep. VII.,8. §Wats. Proc. Am. Acad. XI, 114. 
[Vasey & Rose, Proc. Nat. Mus., 1888, 534. ae 
[ Bull. Cal. Acad. I., 222. tt Pitt. E Ser 
ttTo complete the account it may be added that it has been detected twice in 
Canadian gardens. Macoun, Cat. Canad. PI. ¥, Ot. 
