316 BOTANICAL GAZETTE [APRIL 
B. coronata (L.) Britton. Fortunately, lack of priority in either 
case precludes the use of MIcHAUX’s name ftrichosperma, and we 
thus are able to use names—B. aurea (Ait.) and B. coronata (L.) 
Britton—that are supported with authentic type or cotype speci-. 
mens still extant and in a good state of preservation. 
The plant with leaves divided into linear segments (Diodonta 
leptophylla Nutt., Trans. Amer. Phil. Soc. II. 7: 360. 1841; Bidens 
coronata var. leptophylla Mohr, Contrib. U.S. Nat. Herb. 6: 808. 
rg0r) must properly be designated Bidens aurea (Ait.), var. lepto- 
phylla (Nutt.), comb. nov. Nutratv’s original specimen is still 
preserved in excellent condition (in Herb. Brit. Mus.). 
UNIVERSITY OF CHICAGO 
