240 MINNESOTA BOTANICAL STUDIES. 



Washingtonia longistylis (TORR.) BRITTON, 111. Fl. 2 : 530. 



1897. Sweet cicely. 



Osmorrhiza longistylis DC. Prodr. 41 232. 1830. 

 Myrrhis aristata (THUNB.) MAcM. Met. Minn. Val. 398. 



1892. 



Common in woods throughout. 

 Herb. : Numerous specimens. 



Conium maculatum L. Sp. PI. 243. 1753. Poison hemlock. 

 A European species reported from the Red river valley by 

 Upham. There are no Minnesota specimens in the University 

 Herbarium. 

 Zizia aurea (L.) KOCH, Nov. Act. Caes. Leop. Acad. 12 : 129. 



1824. Early meadow-parsnip. 



Thaspium aureum apterum GRAY, Man. ed. 2, 156. 1856. 

 Very common throughout except northeast. Confused by 

 many authors and collectors with Thaspium trifoliatum aureum 

 (Nutt.) Britton and Thaspium barbinode (Michx.) Nutt. 



Herb. : Very numerous collections. 

 Zizia cordata (WALT.) KOCH in DC. Prodr. 4: in. 1830. 



Heart-leaved meadow-parsnip. 

 Thaspium trifoliatum apterum GRAY, Man. ed. 2, 156. 



1856. 

 Thaspium aureum cordatum (WALT.) B.S.P. Cat. N. Y. 



1888. 



Common throughout except northeast. 

 Herb. : Numerous collections. 



Cicuta maculata L. Sp. PI. i : 256. 1753. "I- Water hemlock. 

 Cicuta virosa maculata C. & R. Rev. N. A. Umbell. 



131. 1888. 



Common throughout, especially south. 

 Herb. : Numerous specimens. 

 Cicuta bulbifera L. Sp. PI. i: 255. 1753. Bulb-bearing 



water-hemlock. 



Common in moist soil throughout. 

 Herb. : Many collections. 

 Deringa canadensis (L.) KUNTZE, Rev. Gen. PI. i : 266. 1891. 



Honewort. 



Cryptotania canadensis DC. Prodr. 4: 119. 1830. 

 Common in woods throughout. 

 Herb. : Numerous collections. 





