Wheeler: THE FLORA OF THE RED RIVER VALLEY. 597 
Rudbeckia hirta L. Sp. Pl. 907. 1753. 
Coll.: Ballard 2563, St. Vincent; MacMillan & Skinner 
41, Crookston. 
Rudbeckia laciniata L. Sp. Pl. 906. 1753. 
Coll.: Ballard 2660, St. Vincent: MacMillan & Skinner 
205, Crookston. 
Ratibida columnaris (Sims) D. Don; Sweet, Brit. Fl. Gard. 2: 
B00. “Logo: 
Coll.: MacMillan & Skinner 75, Maple lake, 365, 
Holmes. 
Helianthus annuus L. Sp. Pl. 904. 1753. 
Coll.: Ballard 2675, St. Vincent. 
Helianthus scaberrimus EL. Bot. S. C. & Ga. 2: 423. 1824. 
Coll.: Ballard 2601, Humboldt; 2703, Northcote; 2739, 
Hallock; MacMillan & Skinner 333, Crookston; 367, 
Holmes. 
Helianthus maximiliani Scurap. Ind. Sem. Hort. Goett. 1835. 
Coll.: Ballard 2572, St. Vincent; 2696, Northcote; 2727, 
Kennedy; MacMillan & Skinner 352, 353, Shirley. 
Helianthus grosse-serratus MARTENS, Sel. Sem. Hort. Loven. 
1839. 
Coll.: MacMillan & Skinner 295, 429, Crookston; 378, 
Holmes. 
Helianthus tuberosus L. Sp. Pl. 905. 1753. 
Coll. : MacMillan & Skinner 203, Crookston ; 392, Holmes. 
Bidens levis (L.) B.S.P. Prel. Cat. N. Y. 29. 1888. 
Coll.: MacMillan & Skinner 264, St. Hilaire; 362, 
Crookston; 371, Holmes. 
Bidens cernua L. Sp. Pl. 832. 1753. 
Coll.: MacMillan & Skinner g, Crookston. 
Bidens frondosa L. Sp. Pl. 832. 1753. 
Coll.: Ballard 2623, Humboldt; 2678, St. Vincent; 2710, 
Northcote; 2733, Kennedy; 2763, Hallock; MacMil- 
lan & Skinner 11, 38, 207, Crookston. 
Helenium autumnale pubescens (Air.) Brirron, Mem. Torr. 
Club, 5: 339. 1894. 
Coll.: MacMillan & Skinner 146, Maple lake. 
