HOFFMANN; FLORA OF BERKSHIRE COUNTY. 339 



The most clearly marked of the varieties of A. puniceus and appar- 

 ently distinct enough to deserve specific rank. 



var. lucidulus Gray, forma albiflorus, f. nov. — Corollis albis. 

 Flowers white. The type collected in a low meadow in Lee, Sept., 

 1919, now in the N. E. B. C. collection. 



A. Schreberi Nees. — Dry woods and thickets; common. 



A. tardifolius L. — Shady roadsides; frequent in the valley. 



var. vestitus Fernald. — Occasional. Lee; Sandisfield (Walters); 

 Sheffield. Two forms occur: one lax and soft-pubescent, the other 

 stiff and harsh-pubescent. 



A. Tradescanti L. — Low ground; occasional. Stockbridge; 

 Great Harrington; Sheffield (Walters). Never in the field a very well- 

 marked species; too near A. paniculatus. 



A. umbellatus Mill.^ {DoelKngeria unibellata 111. Fl. ed. 2.) 



Low ground, borders of swamps and mountain streams, roadside 

 thickets; common on the plateau and in Clarksbiu-g, elsewhere in 

 the valley occasional in swamps. Begins to be common at an altitude 

 of about 1500 feet. Not noted on Greylock, rare on The Dome. 



A. undulatus L.— Dry open woods and clearings; common. 



A. vimineus Lam. — Thickets and roadsides in low ground; com- 

 mon in the valley, infrequent on the plateau. 



var. foliolosus (Ait.) Gray. — Wet woods and low thickets; fre- 

 quent in the valley, 



BELLIS. Daisy. 



B. PEKENNis L. — Occasionally established in lawns. Dalton; 

 Stockbridge. 



BIDENS. Bur Marigold. 



B. Beckii Torr. Water Mabigold. — {Megalodonia Beckii 111. 

 Flora ed. 2..) 



Ponds ; frequent, especially in the valley. 



B. cernua L. Stick-tight. — Wet places; common. 



var. minima (Huds.) DC. — Peat bog, Sandisfield. 



Tiny, spatulate or oblanceolate leaves and usually solitary cam- 

 panulate heads. 



B. comosa (Gray) Wiegand. — {Vid. Rhodora, 17: 25, 1919.) 



River bog, Sheffield (Churchill). 



B. connata Muhl. Swamp Beggak-ticks. — Swamps and low 

 ground; common. 



