MIDDLESEX FLORA. 15 



S. apetala, Willd. ' ' 



Lexington, growing with Anychia capiUaoea, on a wooded hill- 

 side, Aug. 6, 1883 (C. W. Jenks). Probably adv. from Eu. 

 "Hoary pubescent; stem erect, branching; leaves lanceolate, the 

 upper linear; flowers few, terminal, or in the forks, calyx 

 obovate, 10-striate; petals none." DC. Prodr., I. 369. 



Ltchnis, Tourn. 

 L. DIOICA, L. 



Medford an* Cambridge (C. E. Perkins) ; Ashland, established, 

 (Eev. Thos. Morong). Scarce. ,Nat. from Eu. For description, 

 see Wood's Class-Book. 



L. vespertina, Sibth. 

 Cambridge, (fide specimen in Gray Herb.) 



L. Qithago, Lam. Corn Cockle. 

 Westford (Miss Emily F. Fletcher) ; Lowell (Dr. C. W. Swan) ; 

 Ashland, grain-field by railroad (Rev. Thos. Morong); Concord, 

 cornfields (Minot Pratt): According to Dewey's Rep. on Herb. 

 Plants, 1840, "scarcely naturalized, but propagated with the wheat ;" 

 no more evidence of naturalization at present. June-July. 



Arenaeia, L. 



A. SERPYLLIFOLIA, L. THTME-LEAVED SANDWORT. 



Rather common. May-Sept. Nat. from Eu. 

 A. lateriflora, L. 

 Common eastward. May -June. 



Stellaria, L. 



S. MEDIA, Smith. Chickweed. 



Everywhere. April-Nov. Nat. from Eu. 

 S. longifolia, Muhl. Longs-leaved Stitohwoet 



Lowell (Miss M. Swan). ■ Scarce. June-July. 



S. GRAMINEA, L. 



Maiden and Belmont (F. S. Collins) ; Watertown (L. H. Bailey, 



Jr.) ; Winchester (C. E. Perkins) ; Cambridge (Walter Deane) ; 



Ashland (Rev. Thos. Morong). Not uncommon. June-July. 



Nat. from Eu. 



Often confounded with the preceding, but its affinities are rather 



with S. longipes of the Manual from which it differs in the always 



linear-lanceolate leaves (broadest above the base), the divaricate 



pedicels, and more elongated inflorescence. 

 S. uliginosa, Murr. Swamp Stitchwort. 



Lowell, July 11, 1883 (Dr. C W. Swan). Rare. 

 S. borealis, Bigel. Northern Stitchwort, 



Ashby (Dr. C. W. Swan); Tewksbury (J. R. Churchill, 1884:); 



Waltham (F. S. Collins). May-June. 



