265 

 New or Noteworthy North American Phanerogams.— IV. 



By N. L. Britton. 



Ranuncultis pedatifidiis. Smith in Rees. Cyclop. No. 72 (18 19). 

 R. affinis, R. Br. in Bot. App. Parry's First Voyage, 

 265 (1823). 



Smith gives a very good account of the plant, saying that 

 there are four specimens of it in the Linnaean Herbarium, and that 

 it is a native of Siberia. It is now known to inhabit both north- 

 ern Asia and North America The specimens are still in the 

 Linnaean Herbarium. 



Var. CARDIOPHYLLUS (Hook.), (/v. cardiophyllus, Hook, Fl. 

 Bor. Am. i. 14 (1830) ; R. affinis, var. cardiophylIiis,A. Gray, Proc. 

 Acad. Phil 1863, 56), the state of the species with entire or nearly 

 entire radical leaves, appears to bear a similar relation to it as R. 

 inicranthiis, Nutt. does to R. abortivus, L. 



Ranunculus Grayi. 



Raniinciihis pcdatifidiis. Hook. Fl. Bor. Am. i. 18 (1830), 

 not of Smith (18 19). 



R. Hookcri, Regel, Fl. Ost. Sib. i. 47 (1862), not of Schlecht. 

 Linnasa, ix. 610 (1834). 



Schlechtendahl's R. Hookcri is a Mexican species. 



ISOPYRUM, L. Gen. PL Ed. 2, 245 (1742). 



Coptis, Salisb. Trans. Linn. Soc. viii. 305 (1803). 



Isopyriun and Coptis have been kept separate by recent au- 

 thors, the character depended upon for their distinction being the 

 sessile follicles of the one and the stipitate follicles of the other. 

 Baillon (Hist. PI. i.) has referred Coptis to Hcllcborus, L. under 

 which genus the typical species H. trifolius, L. was first described, 

 and except for the vegetative characters it is certainly closely re- 

 lated to this genus. But taking all the known species together 

 it seems to me more desirable to unite Coptis with Isopyrnm. 

 Isopyruni s-tipitatum, A. Gray, of the Northwest contains in itself 

 the characters of the two genera. Our Eastern species Hcllebonts 

 trifolius, L., will then become I. TRIFOLIUM (L). 



Neckeria, Scop. Introd. Hist. Nat. 313 (1777). 



Corydalis, Vent. Choix. PL Cels t. 19 (1803). 

 This, as pointed out by Pfeffer, (Bot. Zeit. xv. 643), is the first 



