WiEGAM) : Some Species of Bidexs 417 



m 4 



elliptic, obtuse, caducous, ovaries short and broadly- oblong, 

 glabrous except the strongly retrorse margins, summit truncate 

 and without awns : corolla of the disk flowers large (4-5 mm.), 

 pale or deep yellow, longer than the awns, campanulate-oval above, 

 very abruptly contracted into a lower portion which is longer than 

 the upper, 5-toothed: stamens slightly exscrted : achenes small 



-6 mm.), olive, narrowly cuneate, slightly dilated at the summit, 

 glabrous, margins strongly, almost serrately retrorse-barbed, rarely 

 tuberculate except on the margins, strongly carinate on both faces 



most 4-angled), carinae retrorse, summit convex ; awns 4 

 length of achene), straight, retrorsely barbed. 



Nova Scotia {Macouii) and Canada to North Carolina, Mis- 



I 



souri and westward to the Pacific coast. ' 



Specimens examined from : — Maine : /^r/v/^/^/ (bog form); M, E, 

 Hill, Parlin, Canada: Port Arthur, Britton ; P. E. I., Macoun ; 

 Quebec, Berg; Ont., McCalla, Scott. New Hampshire : Deane, 

 Robinson, no. 400. Massachusetts : Ricli, Collins. Rhode Island ; 



I 



TJiurhcr, Olncy. New York ; Kearney, Dudley, 'Deforest, Du- 

 Bois, Toivnsend, Schrenh. New Jersey : Parker, Britton. Dela- 

 ware (? Tatnall, awns 2). Virginia : Curtiss. Maryland ; Shriver. 

 North Carolina : Huger (Waynesville). Tennessee : RiitJi. Illinois: 

 Chapman, De Forest. Missouri ; Engelnian, Lake Superior : Lor- 



ing. 



Wisconsin : Gilhnan, ' Wyoming : Nelson, no. 1707. Mon- 

 tana : Scribner^ no. 108. Saskatchewan : Bourgean, Oregon : 

 LyalL Washington : Suksdorf, no, 1592. British Columbia : 

 Macoun, no. 458. California: Mi che ner dind Bioletti. 



Bidens cernua elliptica van nov. 



B, cernua, in part, of many authors. 



B, ehrysantJienioides Pursh, Fl. Am. Sept.; Torr. Fl. N. Y. (in 

 part); Dark Fl. Cest. ; Macoun, Cat. Can. PL 



B. eJirysaJithenioides van o T. & G. Fl. N. A. 2: 353. 1842. 



_ -k 



?i>. cernua Coreopsis Willd. Sp. PI. 17 16. 1804; Pursh, Fk 

 Am. Sept. 



? Coreopsis Bidens L. Sp. PL 908. 1753. In i:>art. 



Plant much larger than the type (.5-1.5 m.), and more bushy- 

 branched, the branches often exceeding the leaves, those at the 

 middle of the stem longest: leaves larger (10-18 cm. x 2— 4 cm.), 

 elliptic-lanceolate or elliptical, acuminate, conspicuously tapering 

 toward the base which is but slightly connate, more evenly and 



