106 MIDDLESEX FLORA. 



S. mucronatum, Michx. (S. Bermudiana, L., var. mucronatum, 

 Man.) 



Wilmington (F. S. Collins) ; Chelmsford (Dr. C. W. Swan). Much 

 the less common species. May-July. 



DIOSCOREACE/'E. YAM FAMILY. 



DIOSCOREA, Plum. 



*D. villosa, L. WILD YAM ROOT. 



" Woods, Concord Turnpike " (Bigelow's Fl. Bost.) Not since re- 

 ported. July. 



SMILACE^E. SMILAX FAMILY. 



SMILAX, Tourn. 



S. rotundifolia, L. GREEN BRIAR. 



Common. June-July. 

 S. glauca, Walt. 



Weston (L. L. Dame). An extreme northern station. July. 

 S. herbacea, L. CARRION-FLOWER. 



Common. June. 

 *S. L herbacea, L., var. peduncularis, A. DC. (var. pulver- 



ulenta, Man.) 



Maiden (F. S. Collins) ; Natick (Austin Bacon) ; Marlboro (Mrs. 



A. M. Staples). June. 



LILIACE,C. LILY FAMILY. 



TRILLIUM, L. 

 * T. sessile, L. 



Concord, introduced from the West by Minot Pratt. June. 

 *T. rvcurvatum, Beck. 



Concord, introduced from Wisconsin by Minot Pratt. June. 

 *T. grandiftorum, Salisb. LARGE-FLOWERED TRILLIUM. 



Concord, introduced by Minot Pratt. June. 

 T. erectum, L. PURPLE TRILLIUM. BIRTHROOT. 



Townsend (Miss H. E. Haynes and C. W. Jenks) ; Ashby (L. L. 



Dame). Concord, introduced from Wachusett by Minot Pratt. 



Rare. May. 

 T. cernuum, L. NODDING TRILLIUM. WAKE-ROBIN. 



Common. May-June. 



