HOFFMANN: FLORA OF BERKSHIRE COUNTY. 253 



JTTGLANS. 



J. cinereaL. Butteknut. — Rich woods, open hillsides; common 

 in the valley, frequent on the lower portions of the plateau (altitude 

 1800 feet, Becket). 



BETULACEAE. BIRCH FAMILY. 

 ALNUS. Aij)BR. 



A. incana (L.) Moench. Speckled Aldee. — Along streams, 

 borders of swamps, and on the plateau along roadsides; common. 



A. crispa (Ait.) Pursh, var. mollis Fernald. — Downy Geeen 

 Aldee. — (A. mollis Man. ed. 7; vid. Rhodora, 15: 4, 1913. A. 

 Alnobdula III. Fl. ed. 2.) 



Hoosac Mt., Florida; along the Deerfield River, Florida. 



A. rugosa (Du Roi) Spreng. Smooth Aldek. — Borders of lakes 

 and streams; occasional in the southern part of the valley. Stock- 

 bridge; New Marlboro (Walters); Sheffield. 



BETULA. Birch. 



B. alba L., var. cordifolia (Regel) Fernald. Papee Biech; 

 Canoe Biech. — {B. cordifolia 111. Fl. ed. 2.) 



Hillsides; occasional. Pittsfield; West Stockbridge; Egremont 

 (Walters). 



var. papyrifera (Marsh) Spach. — (B. papyrifera 111. Fl. ed. 2.) 



Woods; common. A specimen from Otis, determined by Dr. 

 Rehder, with mature leaves only 5 cm. long. 



B. lenta L. Black Biech; Cheeey Biech. — Rich woods, banks 

 of streams; frequent. 



B . lutea Michx. f . Yellow Biech. — Cool rocky woods ; common. 



B. populifolia Marsh. White Biech; Geat Biech. — Sandy or 

 ill-drained soil; common in the southern part of the County, frequent 

 elsewhere. Summits of Greylock (altitude 3400 feet) and The Dome. 



B. pumila L. Low oe Swamp Biech. — Cold bogs; local. D. D. 

 Field swamp and Nigger Pond, Stockbridge; Juniper Pond, New 

 Marlboro. 



CARPINUS. Hornbeam; Ironwood. 



C. caroliniana Walt. Ameeican Hoenbeam; Blue ob Water 

 Beech. — Along streams and borders of swamps, cool rocky hillsides; 

 frequent. 



