78 MIDDLESEX FLORA. 



C. sepium, L. (Calystegia sepiura, E. Br., Man.) Hedge Bind- 

 weed. 



Not uucommoti. Flore plerio, escaped, in fields; Westford, Bed- 

 ford and Lowell (Dr. C. W. Swan). June-Aug. 



CuscuTA, Toiirn. 



C. arvensis, Beyrich. 

 Winter Pond, Winchester (Dr. C. ^Y. Swan). Rare. An extreme 

 northern locality; host plant, Crotalaria sagittalis. .June-July. 



C Gronovii, VVilld. Dodder. 

 Common. Aug.-Sept. 



SOLANACE/E. NIGHTSHADE FAMILY. 



Lycopeksicum, Tourn. 



L. esculentum, Mill. Tomato. 

 Waste places. June-Sept. 



SOLANUM, Tourn. 



S. tuberosum^ L. Potato. 



Waste places. July-Aug. Native of S. Am. 

 S. Dulcamara, L. Bittersweet. Woody Nightshade. 



Common. June-Aug. Nat. from Eu. 

 S. nigrum, li. Nightshade. 



Lowel! and Ch-linsford (Dr. C. W. Swan); Medford (C E. 



Perkins) ; Framingham (Rev. J. H. Temple) ; Concord (Minot 



Pratt). Rare. July-Sept. According to Gray, Syn. Fl. N. A., a 



cosmopolite, " common in damp or shady, especially cultivated or 



waste grounds, appearing as if introduced." 

 S. Carolinense, L. Horse-Nettle. 



Watertowu and Reading (C. E. Perkins). Rare. June-Aug. 

 S. sisymbriifoUum, Lam. 



Cambridge, rubbish heap, 1884 and 1885 (Walter Deane; specimen 



in herb. of). Adv. from S. Am. 



"Stem somewhat herbaceous, hairy, viscid, prickly; leaves viscid, 



hairy, prickly on both sides, pinuatitid, lobes acute, sinuate-dentate, 



racemes terminal and lateral, calyx 5-angled, inflated, prickly, 



covering the berry." DC. Prodr., XIII, 1, 326. 

 S. rostratum, Dun. 



Lowell, rather common (Dr. F. Nickerson) ; Watertowu and Somer- 



ville (C.E.Perkins); Maiden (F. S. Collins). Aug.-Sept. Adv. 



from the West. For description, see Wood's Bot. and Fl. 



