582 MINNESOTA BOTANICAL STUDIES. 
Oxygraphis cymbalaria (PuRsH) PRANTL, in Engl. & Prantl, 
Nat; PH. Ham:732) bt. 2, OF “tOOr: 
Coll.: Ballard 2508, Fergus Falls; 2645, St. Vincent; 
2788, Warren; MacMillan & Skinner 409, Holmes. 
Thalictrum purpurascens L. Sp. Pl. 546. 1753. 
Coll.: MacMillan & Skinner 32, Crookston. 
BERBERIDACEZ. 
Caulophyllum thalictroides (L.) Micux. Fl. Bor. Am. 1: 205. 
1803. 
Coll.: MacMillan & Skinner 286, Thief River Falls. 
. MENISPERMACEZ. 
Menispermum canadense L. Sp. Pl. 340. 1753. 
Coll.: Ballard 2661, St. Vincent; MacMillan & Skinner 
194, Crookston. 
CRUCIFERZ. 
Thlaspi arvense L. Sp. Pl. 646. 1753. 
Coll.: Ballard 2573, St. Vincent; 2579, Humboldt; 2690, 
Northcote. 
Roripa palustris (L.) Bess. Enum. 27. 1821. 
Coll.: Ballard 2709, Northcote; MacMillan and Skinner 
214, Crookston. 
Roripa hispida (Desv.) Brirron, Mem. Torr. Club, 5: 169. 
1894. 
Coll.: Ballard 2639, St. Vincent. 
Sophia hartwegiana (FourN.) GREENE, Pittonia, 3: 95. 1896. 
Coll.: MacMillan & Skinner 363, Crookston. 
Erysimum cheiranthoides L. Sp. Pl. 661. 1753. 
Coll.: MacMillan & Skinner 5, 197, Crookston. 
CRASSULACE. 
Penthorum sedoides L. Sp. Pl. 432. 1753. 
Coll.: MacMillan & Skinner 231, Crookston; Ballard 
2780, Warren. 
