The “CHARACEAS AMERICANA EXSICCATZS” has been 
prepared for the purpose of stimulating the search for these interesting 
plants by American botanists. There are few localities in which from 
six to twelve different forms may not be found. Some species mature 
early in the season, others late. Numerous clearly defined species, 
varieties and forms belonging to America are already known, and to 
these frequent additions are being made. A variety, or even a form 
seems to be persistent in a given locality, though it may not be found 
every year ; and we are desirous to obtain all forms, in order to com- 
plete a scheme of the American Characes. We shall be glad to exchange 
a part of the “ Exstccara” for a hundred specimens of a desirable species, 
variety or form. The specimens should be mounted on white paper ; 
if delicate, they should be floated on paper under water. Corres- 
pondence cordially invited. 
T. F. ALLEN, M. D., 
10 East 36th Street, 
New York Crry. 
MISSOURI 
; BOTANICAL 
copyright reserved GARDEN 
