590 MINNESOTA BOTANICAL STUDIES. 



Asclepias speciosa TORR. Ann. Lye. N. Y. 2 : 218. 1826. 

 Coll. : MacMillan'& Skinner 58, Crookston. 



CONVOLVULACE^E. 



Convolvulus sepium L. Sp. PI. 153. 1753. 



Coll. : Ballard 2566, St. Vincent ; MacMillan & Skinner 

 403, Crookston. 



CUSCUTACE^E. 



Cuscuta polygonorum ENGELM. Am. Journ. Sci. 43 : 342. 1842. 

 Coll. : Ballard 2674, St. Vincent. 



Cuscuta gronovii WILLD. ; R. & S. Syst. 6: 205. 1820. 



Coll.: MacMillan and Skinner 223, Crookston; 268, 

 Thief River Falls ; 376, Holmes. 



BORAGINACEjE. 



Lappula lappula (L.) KARST. Deutsch.Fl. 979. 1880-83. 



Coll. : Ballard 2770, Hallock ; MacMillan & Skinner 245, 

 Red Lake Falls. 



Lappula americana (A. GRAY) RYDBERG, Bull. Torr. Club, 24: 



294. 1897. 



Coll. : MacMillan & Skinner 243, Red Lake Falls. 

 No previous authentic collection reported from Minnesota. 

 Previous collections of this species in this State have been 

 made and determined as L. floribtmda (Lehm.) Greene. 



Onosmodium carolinianum (LAM.) DC. Prodr. 10 : 70. 1846. 

 Coll. : MacMillan & Skinner 386, Holmes. 



VERBENACE^. 



Verbena hastata L. Sp. PI. 20. 1753. 



Coll.: Ballard 2502, Fergus Falls; 2647, St. Vincent; 

 MacMillan & Skinner 30, Crookston. 



LABIATJE. 



Teucrium canadense L. S p. PI. 564. 1763. 



Coll. : MacMillan & Skinner 118, Maple lake. 



Scutellaria lateriflora L. Sp. PI. 598. 1753. 



Coll. : Ballard 2506, Fergus Falls ; MacMillan & Skinner 

 i, Crookston. 



