304 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 



Borders of ponds and streams; frequent. 



The var. laevigatios is glabrous with bright green leaves as con- 

 trasted with var. pubescens which has the stem and lower surface of 

 the leaves more or less tomentose-pubescent. 



LYTHRUM. Loosestrife. 



L. alatum Pursh. — Swampy meadows (calcareous), Stockbridge; 

 Sheffield. 



L. Salicaeia L. Spiked Logsestbife. — Borders of streams and 

 wet meadows; now frequent along the Hoosac and Housatonic Rivers 

 and their tributaries. 



ONAGRACEAE. EVENING PRIMROSE FAMILY. 

 CIRCAEA. Enchanter's Nightshade. 



C. alpina L. — Cool woods; frequent. 



C. canadensis Hill. — (C. intermedia Man. ed. 7 and 111. Fl. ed. 2; 

 vid. Ehodora, 19: 87, 1917.) 



Moist gravelly soil; occasional. Wet slide above brook, Cheshire 

 (Churchill); border of Lake Averic, Stockbridge; flood-plain of Bash 

 Bish Brook, Mt. Washington; moist clearing, Sheffield. 



Generally only a few plants in a station, suspiciously intermediate 

 between C. alpina and C. latifolia. 



C. latifolia Hill. — (C. lutetiana Man. ed. 7; vid. Rhodora, 17: 

 223, 1915.) 



Woods and clearings; common. 



EPILOBIUM. Willow-herb. 



E. angustifolium L. Fiee-weed. — Clearings and borders of 

 woods; common. 



forma albiflorum (Dumort.) Haussk. — Harvey Mt., West Stock- 

 bridge. 



E. coloratum Muhl. — Ditches, wet roadsides and swamps; 

 common. 



E. densum Raf.— {E. lineare III. Fl. ed. 2.) 



Swamps; common. 



E. glandulosum Lehm., var. adenocaulon (Haussk.) Fernald. — 

 (E. adenocaulon Man. ed. 7 and HI. Fl. ed. 2; vid. Rhodora, 20: 35, 

 1918.) 



