LIST OF HIGHER SEED-PRODUCING PLANTS. 531 



Adenocaulon bicolor Hook. Bot. Misc. I, 119 (1849). 

 Wats, and Coult., Gray's Man. 6 ed. 269; Upham, Fl. Minn. 70; Mac , 

 Fl. Can. I, 239; Engl. Hoffmann, Nat. Pflanz. IV, 5, 206; Gray, Syn. Fl. 



1, 2, 237. 



Himalayas to Japan. 



North America: N. of L. Superior to lat. 52° N.; W. 

 to Rockies, Cascade range, Brit. Col.. Vancouver; S. to Calif. 

 and C. Minn. 



Minn, valley: Reported from N. edge; rare; moist or 

 deep woodland. 



Herb.: Bailey 296, St. Louis river. 



POLYMNIA Linn. Diss. Chen. 1181 (1751). 

 Alymnia Neck. Elem. I, 31 (1790). 

 Polymniastrum Lam. 111. 712 (1793;. 

 Baillon, Hist. PI. VIII, 234 [sub Silphium]\ Benth. and Hook., Oen. PL 

 II, 346; Durand, Ind. Gen. Plian. 206; Engler and Prantl, Nat. Pflcmz. IV, 

 5, 217 (Hoffmann). 



Living species: 10-12; Buenos Ayres to Brit. Col. 

 Canada, 1; E. Sts., 2; S. Sts., 2; W. Tex. 1. 



Polymnia canadensis Linn. Amoen. HI, 15 (1756). 

 P. canadensis var. discoidea Gray, Man. 3 ed. 248 (1857). 

 Wats, and Coult., Gray's Man. 6 ed. 269; Upham, Fl. Minn. 78; Chap., 

 F\. S. St. 219; Mac, Fl. Can. I, 239; Gov., Fl. Ark. 193; Gray, Syn. Fl. I, 



2, 238. 



North America: Ont. and Conn, to mts. of N. Car. ; W. 

 to Minn., Kan., Mo. and Ark. 



Minn, valley: S. E. district; rare; ravines, woods and 

 damp edges of thickets. 



Herb.: Sandberg 309, Red Wing; Holzinger i^O, Wi- 

 nona Co. ; Sandberg 310, Red Wing; Holzingei^ 121, Winona Co. ; 

 and in variety radiata Gray, Sheldon 653, Waseca. 



SILPHIUM Linn. Gen. Corr. 981 (1737). 

 Baillon, Hist. PI VIII, 234 (incl. Philoglossa DC, JBerlandiera DC, 

 Engelmannia T. a.uc\ G., Sdiizoptera Turcz., Polymnia Linn.); Benth. and 

 Hook., Gen. PI. II, 350; Durand, Ind. Gen. Phan. 207; Engler and Prantl, 

 Nat. Pflanz. IV, 5, 218 (Hoffmann). 



Living species: 12-13; N. America. E. Sts., 6-7; S. 

 Sts., 8-9; Rocky mts., 1; Canada, 2; W. Tex., 6. 



Silphium perfoliatum Linn. Spec. 2 ed. 1301 (1762). 



S. connatwn Linn. Mant. 574 (1767). 



S. tetragonum and scabrum Moench, Meth. 606 (1794). 



8. conjicnctum Willd. Enum. 633 (1809). 



S. hornemanni SonuAD. Hort. Gott. (1809). 



S. erythrocaulon Bernh. Spreng. Syst. Ill, 630(1826). 



