380 MINXESOTA BOTANICAL STUDIES. 



LeptorcMs liliifolia (L.) Kuntze, Rev. Gen. PI. 671. 1891. 

 Coll.: Wheeler 107, 168, 195, Winnebago; 350, Crooked 

 Creek; 391, Jefferson. June, July. 



JUGLANDACE^. 



Juglans nigra L. Sp. PI. 997. 1753. 



Coll. : Lyon 243. Crooked Creek. July. 



Juglans cinerea L. Sp. PI. Ed. 2, 1415. 1763. 

 Coll. : Lyon 62, 108, Winnebago. June. 



Hicoria minima (Marsh.) Britton, Bull. Torr. Club, 15 : 284. 

 1888. 

 Coll.: Lyon 149, Winnebago ; 238, 239, Mayville ; 475, 

 Jefferson. June, Aug. 



Hicoria ovata (Mill) Britton, Bull. Torr. Club, 15: 283. 



1888. 

 Coll. : Lyon 71, Winnebago; 474, Jefferson. June, Aug. 



SALICACE^. 



Populus alba L. Sp. PI. 1034. ^753- 



Coll. : Lyon 159, Winnebago. June. 



Populus balsamifera candicans (Ait.) A. Gray, Man. Ed. 2, 

 419. 1856. 

 Coll. : Lyon 156, Winnebago. June. 



Populus grandidentata Michx. F1. Bor. Am. 2: 243. 1803. 

 Coll. : Lyon 64, Winnebago. June. 



Populus tremuloides Michx. F1. Bor. Am. 2: 243. 1803. 



Coll. : Lyon 88, Winnebago. June. 

 Populus deltoides Marsh, Arb. Am. 106. 1785. 



Coll. : Lyon 125, Winnebago. June. 

 Salix nigra Marsh, Arb. Am. 139. 1785. 



Coll. : Wheeler 265, Winnebago. June. 



Salix amygdaloides Anders. Ofv. Handl. Vet. Akad. 1858: 

 114. 1858. 

 Coll. : Wheeler 137, Winnebago. June. 



Salix lucida Muhl. Neue Scrift. Ges. Nat. Fr. Berlin, 4: 239. 

 pLd./.y. 1803. 

 Coll.: Wheeler 138^, Winnebago ; 232, Crooked Creek. 

 June, July. 



