HOFFMANN: FLORA OF BERKSHIRE COUNTY. 267 
forma leucosepala Fernald. — (Vid. Rhodora, 19: 140, 1917.) 
Sheffield. 
Sepals thinnish and petaloid, white, the larger ones scarcely pubes- 
cent on the back, obovate-rounded above, 1.2 to 1.7 cm. long. 
ANEMONELLA. 
{Sijndesmon 111. Fl. ed. 2.) 
A. thalictroides (L.) Spach. Rue Anemone. — Dry woods; 
frequent in the southern part of the valley. Stockbridge; Great 
Barrington; New Marlboro; Egremont; Sheffield. 
AQUILEGIA. Columbixe; Hoxeysuckle. 
A. canadensis L. Columbine. — Open rocky woods and ledges; 
common. 
forma flaviflora (Tenney) Britton. — A form with pale yellow 
flowers. Sheffield. 
forma Phippenii, (J. Robinson), n. comb. — Rocky pasture, Egre- 
mont. 
A. VULGARIS L. — Occasionally escaping from gardens to roadsides. 
Hancock; Lenox; Mt. Washington. 
CALTHA. Marsh Marigold. 
C. palustris L. Cowslip. — In swamps and along brooks; com- 
mon. 
CIMICIFUGA. BrGBAXE. 
C. racemosa (L.) Nutt. Black Cohosh; Black Snakeroot. — 
Native on rich and partly shaded banks, Sheffield (Walters). Also 
occasionally escaping from cultivation to hedge-rows. New Marl- 
boro; Great Barrington. Frequent in the western part of Sheffield 
where it probably reaches its most northern station. 
Given by Dewey as only cultivated by the Shakers. May it not be 
that this striking plant, which he could hardly have overlooketi, has 
worked its way northward in the last hundreil years as the woods have 
been cleared and the soil has become drier? 
CLEMATIS. Clematis; Virgin's Bower. 
C. verticillaris DC Purple Clematis. — {Atragene amcricana 
111. Fl. c(l. 2.) 
