HOFFMANN: FLORA OF BERKSHIRE COUNTY. 297 



A. pennsylvanicum L. Steiped Maple; Moosewood. — Rich 

 woods; common on the upland. 



A. rubrum L. Red Maple; Swamp Maple. — Swamps, borders 

 of ponds and rocky summits; common. 



var. tridens Wood. — (A. carolinianum 111. Fl. ed. 2.) 



Low ground; occasional. Cheshire (Winslow); Pittsfield; Lenox; 

 Stockbridge; New Marlboro; Sheffield. 



A. saccharinum L. White Maple; Riveb Maple. — Banks of 

 streams; common. 



A. saccharum Marsh. Sugab Maple; Rock Maple. — Rich 

 woods; common, particularly on mountain slopes. 



var. nigrum (Michx. f.) Britton. Black Sugae Maple, — {A. 

 nigrum 111. Fl. ed. 2.) 



Common as a shade tree in the southern part of the valley. In- 

 digenous on a limestone ridge in Williamstown, in alluvial woods in 

 North Adams (Fernald), and on a cobble over the Housatonic River 

 in Sheffield. 



A. spicatum Lam. Mottntain Maple. — Cool woods; common 

 on the upland, frequent in the valleys. 



SAPINDACEAE. SOAPBERRY FAMILY. 



AESCULUS. 



A. HipPOCASTANUM L. CoMMON HoBSE-CHESTNUT. — Occasionally 

 self-sown. 



BALSAMINACEAE. TOUCH-ME-NOT FAMILY. 

 IMPATIENS. Jewblwebd. 



I. biflora Walt. Jewelweed; Spotted Touch-me-not. — Rich 

 moist soil in shade; common. 



forma Peasei A. H. Moore. — Perianth cream color, with pink spots 

 {vid. Rhodora, 21: 98, 1919, and 19: 116, 1917). 



Low ground, Stockbridge. 



I. pallida Nutt. Pale Touch-me-not. — Borders of streams and 

 moist slopes; frequent in the valley, on the lower slopes of Grey- 

 lock and of the Dome. A form with whitish flowers, Lanesboro 

 (Churchill). 



