1913] SHERFF—BIDENS 405 
that the terminal leaflet varies in length from about 5 cm. to Jess than 3 cm. 
Some of the specimens examined were as follows: J. H. Hart (without date); 
Geo. E. Nichols 137, particularly the specimen in the Mo. Bot. Gard. Herb.; 
E. G. Britton, N.Y. Bot. Gard. Explor. Jam. 3867; N. L. Britton, same series 73. 
Bidens coronata (L.) Britton, auctor’emend.—B. coronata (L.) 
Fischer, Britton in Bull. Torr. Bot. Club 20:281. 1893. 
Britton, at the time of transferring several American species from Core- 
opsis to Bidens, assumed that this species had already been transferred by 
Fiscuer. In fact, as his citation proves, he rested his assumption eye 
upon STEUDEL. But a careful examination of STEUDEL (Nomencl. 
1840), with proper regard for his use of italics for synonyms, isis dat 
Fiscuer’s plant was Coreopsis coronata Hooker (a true Coreopsis) and not 
Coreopsis coronata L. StEUDEL even emphasized this fact with the words nec 
alior after C. coronata Hooker, to which he referred Bidens coronata Fischer. 
Thus the Linnean species was left in Coreopsis until Brirton’s treatment of 
it as a species of Bidens. That the name may be given a definite and tech- 
nically correct status, it is here set forth as Bidens coronata (L.) Britton. 
UNIVERSITY OF CHICAGO 

