MIDDLESEX FLORA. 107 



*T. nivale, Ridd. Dwarf White Trillium. 



Concord, introduced from Illinois by Minot Pratt. Apr.-May. 

 T. erythrocarpum, Michx. Painted Trillium. 



Ashby, comuiou (L. L. Dame) ; Groton (C. W. Jenks) ; Concord 



(Minot Pratt) ; Tewksbury (B. D. Greene) ; Framingliam (Rev. 



J. H. Temple). Rare, except in the northern towns. May-June. 



Medeola, Gronov. 



M. Virginica, L- Indian Cucumber-root. 

 Common. June. 



Veratrum, Tourn. 



V. viride, Ait. American White Hellebore. Indian Poke. 

 Common. June-Julj-. 



UVULARIA, L. 

 * U. grandijlora, Smith. 



Concord, introdnced fro.n Vermont by Minot Pratt. May-June. 

 U. perfoliata, L. Bellwort. 



Rather common. Ma}'. 



Oakesia, Wats. 



O. sessilifolia, Wats. (Uvularia sessilifolia, L., Man.) Bell- 

 wort. Wild Oats. 

 Common. May. 



Streptopus, Michx. 



S. amplexifolius, DC. 



Ashby (Dr. C. W. Swan) ; Concord, introduced from Wachu5ett by 

 Minot Pratt. June. 



Clintonia, Raf. 

 C. borealis, Raf. 

 Common, espocially in the northern part of the county. May-June. 



Convallaria, L. 



C. majalis, L. Lily of the Valley. 

 Concord, introduced by Minot Pratt ; Wakefield, apparently estab- 

 lished (F. S. Collins). May-June. Adv. from Eu. and from the 

 South. 



Smilacina, Desf. 



S. racemosa, Desf. False Spikenard. 



Common. June. 

 S. stellata, Desf. 



Waverly (Wm. Boott) ; near Fresh Pond, Cambridge (C. E. 



Faxon) ; Concord, introduced from Breed's Island by Minot Pratt.. 



May-June. 



