MIDDLESEX FLORA. 75 



LiTHOSi'ERMUM, Tourn. 



L. ARVENSE, L. Corn Gromwell. 



Lowell, a garden weed (Dr. C. VY. Swau) ; Somerville and Medford 



(C. E. Perkins) ; Reading (W. H. Manning). Not common. June- 



Aug. Nat. from Eu. 

 *L. angiistifolinm, Michx. (L. longiflormn, Spreng., Man.) 



Concord, introduced from 111. by Minot Pratt. May. 



Mertensia, Roth. 



M. Virginica, DC. Virginian Cowslip. Lungwort. 

 Concord, introduced from 111. by Minot Pratt. June. 



Myosotis, L. 



M. PALUsTEis, With. True Forget-me-not. 



Woburn, abundant in a brook near new line of B. & L. R. R., and 

 al?o completely filling a section of the bed of the old Middltsex 

 Canal: thoroughly established (L. L. Dame). June-Aug. Nat. 

 from Eu. 



M. laxa, Lehm. (M. palustris, With., var. laxa, Man.) 

 Rathi^r common. June-Aug. 



*M. arvensis, Hoftm. 

 Chelmsford (Bigelow's Fl. Bost.) ; Maiden (F. S. Collins); Marl- 

 boro (Mrs. A. M. Staples) ; Groton (C. W. Jenks). Scarce. June- 

 Aug. 



M. verna, Nutt. 

 Common. June-July. ♦ 



Amsinckia, Lehm. 



A. intermedia, Fisch. & Meyer. 

 Wool-waste, N. Chelmsford (Rev. W. P. Alcott) ; Lowell, wool- 

 waste (Dr. F. Nickerson). Adv. from the Pacific coast. For de- 

 scription, see Gray, Syn. Fl. N. A. 



Eritrichium, Schrad. 



E. oxycaryiim, Gray. 

 Wool-waste, N. Chelmsford (Rev. W. P. Alcott). For description, 

 see Gray, Syn. Fl. N. A. 



Echinospermum, Swartz. 



U. Lappnla, Lehm. Stickseed. 



Westford, woollen mills '(DJ'- C. W. Swan); Maiden, old shoddy 

 mill, station now destroyed (F. S. Collins) ; Cambridge (Walter 

 Deane). Rare. July-Aug. Adv. from Eu. 



