LIST OF HIGHER SEED-PRODUCING PLANTS. 231 



Holzinger 9, Winona Co. ; Hammond 2, Lake City; Herb. Sheld. 

 1828, Ramsey Co.; Herb. Moyer 19, Montevideo. 



ISOPYRUM LINN. Gen. ed. II, 533 (1742). 

 Coptis SALISB. Linn. Trans. VIII, 305 (1807 1. 

 Chrysa RAF. Desf. Journ. Bot. II, 170 (1806). 

 Enemion RAF. Jour. Phys. XCI, 70 (1820). 

 Leptopyrnm REICHB. Fl. Germ. 747 (1833). 

 Chrysocoptis NUTT. Trans. Acad. Phil. VII, 9 (1843). 

 Pterophyllum NUTT. 1. c. (1843). 



Baillon, Hist. PL I. 85; Benth. and Hook., Gen. PI I, 8; Engler and 

 Prantl, Nat. Pflanz. 3, II, 58; Durand, Ind. Plian. 2; O. Kuntze, Eev. Gen. 

 PL 3; Gray, 111. Gen. 35, 37. 



Living species: 25; arctic and N. temperate regions; 

 E. Asia, Japan and Himalayas; Atl. and Pac. North America; 

 Russia, 6; Europe, 2; Japan, 8; North America, 7; Calif, and 

 Oregon, 4; Can., 5; E. Sts., 2; S. Sts., 3. 



Isopyrum trifolium (LiNN. ) BEUTT. Torr. Bull. XVIII, 

 265 (1891). 



Helkborus trifolius LINN. Amoen. II, 355 (1750). 

 Coptis trifolia SALISB. Trans. Linn. Soc. VIII, 305 (1798'. 

 Chrysa borealis RAF. N. Y. Med. Rep. V, 350 (1808). 

 Wats, and Coult., Gray's Man. 6 ed. 45; Britt, Fl. N. J. 39; Upham, 

 Fl. Minn. 20; Regel, Fl. O.-Sib. I, 61; Mac., Fl. Can. I, 23; Led., Fl. Ross, 

 1,52; Nym., Fl. Eur.; Miyabe, Fl. Kur. 216; Engl. Prantl, Nat. Pflanz. 

 Ill, 2, 58; Wats., Bibl. Ind. I, 12; Rothr., Alask. 442. 



Iceland; Kamtk. to Mid. Russ., Baikal Sib. and Mid. 

 Japan. 



North America: Greenland, Labrador, N. S., Newf., 

 N. Br. to Rocky mts; S. to N. Eng., N. J., Md.; W. to Ohio, 

 Iowa, Minn, and Dak. ; Alaska. 



Minn, valley: Forest region and perhaps in some 

 prairie bogs; principally in tamarack swamps. 



HERB.: Leiberg 5, Blue Earth Co.; Sandberg 35, 

 Tower; Roberts 6, Devil's Neck river; Leonard 2, Minneapolis; 

 Bailey 312, St. Louis river; Herb. Sheldon 1825, Lake Calhoun. 



Isopyrum biternatum (RAF.) T. and G. Fl. I, 660 (1838). 

 Enemion biternatum RAF. Journ. Phys. II, 70 (1811?). 

 Isopyrum thalictroides SHORT, PI. Kent. I, 8 (1833). 

 Wats, and Coult., Gray's Man. 6 ed. 44; Upham, Fl. Minn. 20; Chap., 

 Fl. S. St. 9; Regel, Fl O.-Sib. I, 62; Mac., Bot. Gaz. XVI, 285; Cov., Fl. 

 Ark. 163; Wats., Bibl. Ind. I, 14. 

 Kamtschkatka. 



North America: Ont. and Minn, to Ohio and Fla. ; W. 

 to Iowa. 



Minn, valley: Forest region; Ft. Snelling to New 



