MIDDLESEX FLORA. 



Camelina, Crautz. 



C. sativa^ Crantz. False Flax. 

 Maiden (F. S. Collius) ; Wpstford, woollen-mill yard (Dr. C. W. 

 Swan) ; Medford (VVm. Boott). June-July. Adv. from Eu. 



Capsella, Vent. 



C. BuRSA-PASTORis, Moeuch. Shepherd's Purse. 

 Everywhere. Apr.-Xov. Nat. from Eu. 



Thlaspi, Tourn. 



T. arveiise, L. Mithridate Mustard. 

 Somerville (C.E.Perkins); Lowell; Chelmsford, two localities, 

 one in a field which had been cultivated; numerous plants in 

 another which had been dressed with wool-waste ; no evidence of 

 permanent residence (Dr. C. W. Swan). May. Adv. from Eu. 



Lepidium, L. 



L. Virginicum, L. Wild Peppergrass. 

 Connnon. June-Sept. 



L. ruderale, L. 

 Lowell and Chelmsford (Dr. C. W. Swan) ; Somerville and Cam- 

 bridge (C. E. Perkins); Weston (F. S. Collins). Eather common 

 in the eastern section of the county. The rare form with petali- 

 f erous flowers has been found at Maiden. May-June. Nat. from Eu. 



L. CAMPESTRE, E. Br. 



Newton (C. J. Sprague) ; Cambridge (T. W. Harris, Hovey's Mag. 

 Vol. VI, 1840) ; Maiden ; Melrose, not uncommon, 1884 and 1885, 

 (F. S. Collins) ; Lowell, on the road-bed of the B. & M. E. E. (Dr. 

 C. W. Swan). June. Nat. from Eu. 



Senebiera, DC 

 S. didyma, Pers. 

 Cambridge, in walks (L. H. Bailey, Jr.) "An immigrant from 

 farther south." Man. 3Iay-June. 



ISATIS, L. 



/. tinctoria, L. Woad. 

 Newton (C. J. Sprague) , ^c?e specimen in herb. B. S. N. H. Adv. 

 from Eu. For description, see Wood's Bot. & Fl. 



Cakile, Tourn. 



C. Americana, Nutt. Sea-Eocket. 

 Medford (C. E. Perkins); Maiden (F. S. Collins). Along the 

 Mystic. July-Aug. 



