VASCULAR PLANTS OF NORTH DAKOTA 65 



1 158. Bidens frondooa Linn. Sp. PI. 832. (1753). 

 Pleasant Lake; Logan Co.: Beaver Lake (Brenekle). 



1 159. Bidens vulgata Greene, Pittonia 4: 72. (1901). 

 Leeds, Peninsula of Lake Ibsen. 



1 160. Bidens vulgata var. puberula (Wiegand) Greene. 

 In a swamp, Leeds. 



1 161. Bidens vulgata var. schizantha Lunell, var. now 

 Leaves bipinnately 3-7 divided, except the 3 upper leaflets, 



which are undivided; petioles widened at base. 

 In the western part of the state. 

 MADIA Molina Chil.; Cav. Ic. Ill: 50, t. 298 (1794). 



1 162. Madia glomerata Hook. Fl. Bor. Am. 2: 24. (1834). 

 Leeds (extinct); Williams Co.. Spring Brook (O. A. Stevens). 

 GALINSOGA R. & P. Prodr. Fl. Per. no, pi. 24. (1794)- 



1 163. Galinsoga parviflora Cav. Icon. 3: 41, pi. 281. (1794). 

 Fargo (CI. Waldron). 



HYMENOPAPPUS L'Her. Diss. (1788). 



1 164. Hymenopappus filifolius Hook. Fl. Bor. Am. I: 317. 



(1833)- 



Morton County (W. B. Bell). 



BAH I A Lag. Gen. & Sp. Nov. 30. (1816). 



1 165. Bahia oppositifolia Nutt.; T. & G. Fl. N. A. 2: 376. 

 (1842). 



Trichophyllum oppositifoliiim Nutt. Gen. PI. 2: 167. (r8i8). 



Picradeniopsis oppositifolia (Nutt.) Rydb. Britt. Man. 1008. 

 (1901). 



"On denudated sterile hills, near Fort Mandan;" Morton Co. 

 (W. B. Bell). 



TETRANEURIS Greene, Pittonia III: 265. (1898). 



1 166. Tetraneuris simplex A. Nels. Bot. Gaz. 127. (1899). 

 Belfield (Bergman). 



HYMENOXYS Cass. Diet. Sc. Nat. LV. : 278. (1828). 



1 167. Hymenoxys pumila (Greene). 



Picradenia pumila Greene, Pittonia III: 271. (1898). 

 Belfield (Bergman). 



1 168. Hymenoxys Richardsojiii (Hook.) Ckll. Bull. Torr. 

 Bot. Club. 31 : 471. (1904). 



Dickinson (CI. Waldron). 

 HELENIASTRUM Vaillant. Act. 406. (1720). 



