106 MIDDLESEX FLORA. 



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

 Man.) 



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

 the less conmion species. May-July. 



DIOSCOREACEy^. YAM FAMILY. 



DiOSCOKEA, Plum. 



*D. villosa, L. Wild Yam Eoot. 



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

 porteil. 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. herbacea, L., var. peduncularis, A. DC. (var. pulver- 



ulenta, Man.) 



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



A. M. Staples). June. 



LILIACEyC. LILY FAMILY. 



Trillium, L. 

 *T. sessile, L. 



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

 *r. rucurvatum^ Beck. 



Concord, introduced from Wisconsin by Minot Pratt. June. 

 *T. grandifloruni, 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) ; Asliby (L. L. 



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



Eiire. May. 

 T. cernuum, L, Nodding Trillium. Wake-Robin. 



Common. May-June. 



