MIDDLESEX FLOEA. 55 



A. biennis, Willd. BIENNIAL WORMWOOD 



Cambridge (C. E. Perkins) ; Billerica (Dr. C. W. Swan). Aug.- 

 Sept. Adv. from the West, and tending towards naturalization. 



A. ABSINTHIUM, L. WORMWOOD. 



Cambridge (C. E. Perkins) ; Medford (G. E. Davenport) ; Maiden 

 (F. S. Collins) ; Groton (Dr. C. W. Swan). Aug. Nat. from Eu. 



A. STELLERIANA, Bess. 



Tewksbury, a garden escape (Dr. C. W. Swan) ; Cambridge, grow- 

 ing in the sand on the bank of the Charles (Walter Deane; speci- 

 men in herb. of). Int. from the north-west coast, and locally nat- 

 uralized. "A foot or two high from a creeping lignescent base, 

 robust, densely white-tomentose, the tomentumof the stem cottony; 

 leaves obovate or spatulate in outline, sinuately or incisely pinnati- 

 fid ; lobes obtuse ; corolla glabrous ; akenes a line pnd a half long, 

 oblong, not contracted at summit; the coat utricular." Syn. Fl. 

 N. A. 



GNAPHALIUM, L. 



G. decurrens, Ives. EVERLASTING. 



Dunstable and No. Acton (L. L. Dame) ; Medford and Ashby (Dr. 



C. W. Swan) ; Framingham (Rev. J. H. Temple) ; Woburn and 



Medford (Wm. Boott). Widely distributed, but nowhere common. 



July-Sept. 

 G. polycephalum, Michx. EVERLASTING. 



Common. Aug.-Sept. 

 G. uliginosum, L. CUDWEED. 



Common. July-Sept. 

 G. purpureum, L. PURPLISH CUDWEED. 



Lowell, "dump" (Dr. C. W. Swan). June. 



ANAPHALIS, DC. 

 A. margaritacea, Benth. & Hook. (Antennaria margaritacea, 



R. Br., Man.) PEARLY EVERLASTING. 



Common. Aug.-Sept. 



ANTENNARIA, Gaertn. 



A. plantaginifolia, Hook. LADIES' TOBACCO. 

 Very common. April-May. 



ERECHTITES, Raf . 



E. hieracifolia, Raf. FIREWEED. 



Very common. Aug.-Sept. 



SENECIO, Tourn. 

 S. VULGARIS, L. GROUNDSEL. 



Somerville (C. E. Perkins); Marlboro (Mrs. A. M. Staples); 



Lowell (Dr. C. W. Swan) ; Medford and Maiden (F. S. Collins). Not 



common save in the towns near Boston. July-Oct. Nat. from Eu. 



