HOFFMANN: FLORA OF BERKSHIRE COUNTY. 315 



F. nigra Marsh. Black Ash. — Swamps and borders of streams; 

 common. 



F. pennsylvanica Marsh. Red Ash. — Occasional along the 

 Housatonic River in Sheffield. 



var. lanceolata (Borkh.) Sarg. Green Ash — Williamstown 

 (Churchill). 



LIGUSTRUM. Privet. 

 L. VULGAEE L. Peivet. — On a limestone ridge, Williamstown. 



SYRINGA. Lilac. 



S. VULGARIS L. Common Lilac. — Persisting and spreading about 

 old house sites; occasional. 



GENTIANACEAE. GENTIAN FAMILY. 

 BARTONIA. 



B. virginica (L.) BSP. — Mossy knolls in upland pasture, Great 

 Barrington. 



GENTIANA. Gentian. 



G. Andrewsii Griseb. Closed Gentian. — {Dasy Stephana An- 

 drewsii 111. Fl. ed. 2.) 



Moist woods and low ground; occasional in the valley. North 

 Adams (Churchill); Alford; Sheffield (Churchill). 



Corolla with nearly truncate summit; the firm true lobes nearly 

 obsolete, narrowed at the summit; the broader intervening thin 

 prolongations of the membranous bands forming a fimbriate-dentate 

 border. 



forma albiflora Britton. — Low shaded ground, Sheffield. 



G. clausa Raf. Closed Gentian. — (G. Andrewsii Man. ed. 7 

 and 111. Fl. ed. 2 in part; vid. Rhodora, 19: 148, 1917.) 



Moist woods and low ground; common. 



Corolla with the broad rounded lobes 2 to 8 mm. long; as broad or 

 broader than the intervening 2- to 3-cleft appendages. 



G. crinita Froel. Fringed Gentian. — Wet meadows, hillside 

 pastures and borders of swamps, common in the valley. 



G. quinquefolia L. — Upland pastures, open hillsides and shaded 

 banks; frequent in the valley. A specimen from Sheffield 7.5 dm. 

 tall. 



