Wheeler : FLORA OF SOUTHEASTERN MINNESOTA. 409 



CICHORIACE^E. 



Cichorium intybus L. Sp. PI. 813. 1753. 



Coll. : Wheeler 594, Lyon 468, Crooked Creek. Aug. 

 Adopogon virginicum (L.) KUNTZE, Rev. Gen. PI. 304. 1891. 



Coll. : Lyon 20, 337, Wheeler 506, Winnebago. June, 



Aug. 

 Taraxacum taraxacum (L.) KARST. Deutsch. Fl. 1138. 1880 



-S3- 

 Coll.: Lyon 121, Winnebago. June. 



Sonchus asper (L.) ALL. Fl. Fed. i : 222. 1785. 



Coll. : Lyon 264, Jefferson. July. 

 Lactuca scariola L. Sp. PI. Ed. 2, 1119. 1763. 



Coll. : Lyon 374, Jefferson. Aug. 

 Lactuca ludoviciana (NUTT.) DC. Prodr. 7: 141. 1838. 



Coll. : Lyon 285, 445, 447, Jefferson. July. 

 Previously reported only by Sheldon from Sleepy Eye. 

 Lactuca sagittifolia ELL. Bot. S. C. & Ga. 2: 253. 1821-24, 



Coll. : Lyon 363, Jefferson. Aug. 



Previously reported only by Sheldon from Lake Benton. 

 Lactuca floridana (L.) GAERTN. Fruct. & Sem. 2 : 362. 1791. 



Coll. : Lyon 334, 410, 423, Winnebago. Aug. 

 Hieracium umbellatum L. Sp. PI. 804. 1753. 

 Coll. : Wheeler 627, Brownsville. Aug. 

 No authentic specimens previously reported from Minnesota. 

 Hieracium canadense MICHX. Fl. Bor. Am. 2 : 86. 1803. 



Coll. : Wheeler 443, Jefferson; Lyon 311, 341, Wheeler 



510, Winnebago. Aug. 

 Hieracium scabrum MICHX. Fl. Bor. Am. 2: 86. 1803. 



Coll.: Wheeler 485, Lyon 336, 405, 462, Jefferson; 

 Wheeler 513, Winnebago; Wheeler 636, Brownsville. 

 Nabalus albus (L.) HOOK. Fl. Bor. Am. i: 294. 1833. 

 Coll. : Wheeler 521, Winnebago. Aug. 



AMBROSIACE^E. 

 Ambrosia trifida L. Sp. PL 987. 1753. 



Coll. : Wheeler 417, Jefferson. July. 

 Ambrosia artemisiaefolia L. Sp. PI. 987. 1753- 



Coll.: Lyon 495, Jefferson. Aug. 

 Xanthium canadense MILL. Gard. Diet. Ed. 8, No. 2. 1768. 



Coll. : Lyon 424, Winnebago. Aug. 



