238 THE AMERICAN MIDLAND NATURALIST 
Family 17. COMMELYNEAE R. Brown (1810). 
TRADESCANTIA Linn. Syst. (1755); Gen. Pl. 98. (1737), 
37. (1742), 38: (1754); ‘Hort.’ Cliff.-126. (1737); Sp. Pi zee 
(1753); Van. Royen. Lugd. 37. (1740). 
257. Tradescantia ramifera Lunell, Am. Midl. Nat. Vol. 
DDS F240 (Tou). | 
Sand Hills (McHenry Co.); Pleasant Lake. 
258. Tradescantia occidentalis Britton, Rydb. Mem. N. Y. 
Bot. Gard. I: 87. (1900). 
Fargo (Cl. Waldron). 
Family 18.: PONTEDEREAE H. B. K. Nov. Gen. et Sp. 
I: 265. (1815). 
HETERANTHERA R. et P. FI. Peruv. et Chil. Pr. 9. (1794). 
259. Heteranthera dubia (Jacq.) McM., Met. Minn. p. 
138. (1892). 
Jamestown; Wahpeton (Bergman). 
Order 13. LILIALES. 
Britton, Man. 2nd ed. p. 244. (1905), in part. 
Family 19. JUNCOIDEAE Gerard, FI. Gall. Pr. p. 138. (1761). 
JUNCUS Plinius, Hist. Nat. and all prae-Linnaean writers. 
Juncus Tour. Els. 212. (1694); I. R. H. 246. (1700); Linn. Syst. 
(1735), Gen. Pl. 104. (1737), 150. (1742); 152: (1754); Spee 
325. (1753). 
260. Juncus balticus Willd. Berl. Mag. 3: 298. (1809). 
Leeds. 
261. Juncus bufonius Linn. Sp. Pl. 398. (1753). 
Leeds, Jamestown. 
262. Juncus Vaseyi Engelm. Trans. St. Louis Acad. 2: 
448. (1866). 
Butte. 
263. Juncus longistylis Torr. Bot. Mex. Bound. 223. (1859). 
Leeds, Butte, Pleasant Lake. 
264. Juncus nodosus Linn. Sp. Pl. Ed. 2, 466. (1762). 
Leeds, Butte, Ttowner. 
265. Juncus nodosus var. genuinus Engelm. 
Benson Co., acc. to specimen deposited in the Gray Her- 
barium by the writer in 1906. 
266. Juncus nodosus var. proliferus Lunell. var. nov. 
In locos florum folia substituta sunt. The flowers are replaced 
by tufts of leaves. In a cold bog among the species. Butte. 
