MIDDLESEX FLORA. 75 



LITHOSPERMUM, Tourn. 



L. ARVENSE, L. CORN GROMWELL. 



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



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



Aug. Nat. from Eu. 

 *L. angustifolium, Michx. (L. longiflorum, 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. PALUSTRIS, With. TRUE FORGET-ME-NOT. 



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

 Rather common. June-Aug. 



*M. arvensis, Hoffm. 



Chelrnsford (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. oxycaryum, Gray. 



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

 see Gray, Syn. Fl. N. A. 



ECHINOSPERMUM, Swartz. 



E. Lappula, Lehm. STICKSEED. 



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

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

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



