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. VULGARE L. Privet. — On a limestone ridge, ^Yilliamstown. 



SYRINGA. Lilac. 



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

 old house sites; occasional. 



GENTIAXACEAE. OENTL\N FAMILY. 

 BARTONIA. 



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

 Barrington, 



GENTIANA. Gexti.^n. 



G. Andrewsii Griseb. Closed Gentian. — {Dasystephana 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 fiinbriate-dentate 

 border. 



forma albiflora Britton. — Low shaded ground, Shefiield. 



G. clausa Kuf. Closed Gentian. — (G. Andrewsii Man. cd. 7 

 and III. Fl. <d. 2 in part; vid. Rhodora, 19: 148, 1917.) 



Moist woods and low ground, comnioii. 

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

 broader than the. intervening ?- to 3-cleft apix'ndages. 



G. crinita Froel I'rin(;ed Gentian Wet meadows, liillside 

 pastures and borders of swamps, eomnion in tlie valley. 



G. quinquefolia I.. - Ipland j)astures, open hillsides and shaded 

 banks; fre(|uent in the valley. .\ specimen from ."Sheffield 7..") dm. 

 tall. 



