EXPLANATORY NOTE 
This circular is made up principally of notes re- 
ceived from agricultural explorers, foreign collabo- 
rators, and correspondents, concerning the more im- 
portant plants which have been received recently by 
the Office of Foreign Seed and Plant Introduction. It 
also contains reports on the behavior of plants which 
have been introduced in previous years. 
Descriptions appearing here are revised and later 
published in the Inventory of Seeds and Plants Import- 
ed, --the permanent record of plant introductions made 
by this Office. 
Plant Immigrants should be considered merely an 
ANNOUNCEMENT OF THE ARRIVAL OF PLANT MATERIAL. As a 
rule all material Is propagated before being distribu- 
ted; this may require several years. 
The Annual Catalogue of New Plant Introductions 
describes briefly the plants available for distribu- 
tion. Applications for seeds or plants listed in Plant 
Immigrants may be sent at any time, however, and will 
be filed in the order of their receipt. When material 
is ready for distribution, these requests will be given 
first attention; if their number is sufficient to ex- 
haust the available supply of a given species, it will 
not be included in the Annual Catalogue. 
Plant breeders and experimenters who desire plants 
not available in this country are invited to correspond 
with this Office which will endeavor to secure the 
required material through its agricultural explorers, 
foreign collaborators, or correspondents. 
DAVID FAIRCHILD 
Agricultural Explorer in Charge, 
Office of Foreign Seed and Plant Introduction. 
Issued May 15, 1922. Washington, D. C. 
Anyone desiring to republish any portion of (his 
circular should obtain permission by applying to 
this Office. 
