MIDDLESEX FLORA. 75 



LiTHOSPERMDM, Tourn. 

 L. AEVENSE, L. COKN GROMWELL. 



Lowell, a garden weed (Dr. C. W. Swan) ; Somerville and Medford 

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

 Aug. Nat. from Eu. 

 *X. angustifolium, Michx. (L. longlflorum, Spreng., Man.) 

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



Mertensia, Both. 



M-VirginicajDC. Virginian Cowslip. Lungwort. 

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



Mtosotis, L. 



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



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

 also completely filling a section of the bed of the old Middlesex 

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

 from Eu. 



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

 Eather common. June-Aug. 



*M. arvensis, Hofl'm. 

 Chelmsford (Bigelow's FI. Bost.) ; Maiden (P. 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 (Eev. W. P. Alcott) ; Lowell, wool- 

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

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



Eeitrichium, Schrad. 



E. oxycaryum, Gray. 

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

 see Gray, Syn. Fl. N. A. 



ECHINOSPEEMUM, Swartz. 



E. Lappula, Lehm. Stickseed. 

 Westford, woollen mills ;(Dr. C. W. Swan) ; Maiden, old shoddy 

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

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



