550 Mr Goldie's Account of' some new arid rare Plants , 
raceme of about four flowers. Pedicels short, bracteated. 
Flowers purplish-red, much resembling those of Corydalis for- 
mosa^ (Diclytra Dec.) Stigma 4-lobed. 
I know not whether this be the Canadian variety of Corydalis 
formosa^ which Mr Pursh says is somewhat different in as- 
pect* from the Virginian plant, but not sufficiently so to consti- 
tute it a species but to me it appears most unquestionably dis- 
tinct. It is altogether a very slender plant, the segments of the 
leaves peculiarly narrow, indeed quite linear. Raceme always 
simple, and the stigma not two-edged, as described by Gawler 
and Decandolle, but 4-lobed. In this last particular it comes 
near the Fumaria eximia of the Botanic Register. There, how- 
ever, the whole plant is greatly larger, and more robust, the 
flowers are larger, the racemes compound, and the segments of 
the leaves very broad and incised. In many, but not in all 
points, this agrees with the Diclytra tenuifolia of Dec. ; that, 
however, is an Asiatic^ not as Pursh supposed, an American spe- 
cies. 
SYNGENESIA POLYGAMIA ^QUALIS. 
Bidens. 
Calyx subiequalis calyculatus. Corollidx rarius flosculo uno 
alterove radiante instructs. Receptaculmn paleaceum, pla- 
num. Pappus aristis duo seu quatuor, reflexis et erectis, 
scabris. Semina tetragona. 
Bidens Beclcii ; foliis oppositis inferioribus capillaceo-multifidls, 
superioribus lanceolatis connatis acute serratis, floribus radia- 
tis radio involucrum excedente. 
B. BecMi, Torrey, in Sprengefs Neue Entdeckungen in ganzen 
Umfang der Pflanzenkunde, vol. ii. p. 155. 
Hah. Stagnant waters, at the edge of the St Lawrence, 
near Montreal. Found by Dr Beck in similar situations 
near Schenectady, on the banks of the Missouri, 
About a foot high, simple, or with very small and slender 
branches arising from the axils of the upper leaves. Lower 
leaves very multifid, capillary, as in Ranunculus aquatilis, up- 
per ones about an inch and a half long, broadly lanceolate, atte- 
nuated at each extremity, deeply serrated. Flowers solitary at 
the extremity of the stem, rather large, yellow. , Radius much 
jionger than the involucre. 
