254 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 



CORYLUS. HazeI^nut. 



C. americana Walt. Hazelnut. — Dry soil; common in the 

 extreme southern part of the County; Egremont; Sheffield. Occa- 

 sional as far north as Lenox Hill (Schneider and Schweinfurth). 



C. rostrata Ait. Beaked Hazelnut. — Borders of woods and 

 roadside thickets; common on the upland and frequent in the valley, 

 occurring occasionally with C. americana. 



OSTRYA. Hop Hornbeam; Ironwood. 



0. virginiana (Mill.) K. Koch. American Hop Hornbeam. — 

 Open rocky woods and hillsides, particularly in calcareous soil; fre- 

 quent in the valleys, occasional on the plateau (altitude 2000 feet, 

 Savoy.) 



FAGACEAE. BEECH FAMILY. 

 CASTANEA. Chestnut. 



C. dentata (Marsh) Borkli. Chestnut. — Rich woods; common 

 in the valley, frequent on the lower parts of the plateau, absent from 

 the higher parts. 



FAGUS. Beech. 



F. grandifolia Ehrh. Beech. — Rich woods; common on the 

 plateau, frequent in the valleys. Summit of Greylock, altitude 3500 

 feet. 



forma pubescens Fernald & Rehder. — (Vid. Rhodora, 9: 111, 

 1907.) Williamstown (Rehder). 



Differs from the type in having the under side of the leaves short- 

 pubescent, and the veins covered with a villous pubescence, not with 

 long silky hairs. 



QUKRCUS. Oak. 



Q. alba L. White Oak. — Dry soil; common in the southern part 

 of the valley and on the Taconics, absent from the plateau. 



Q. bicolor Willd. Swamp White Oak. — Borders of streams and 

 swamps; occasional in the southern part of the valley. Great 

 Barrington; Egremont; Sheffield. 



Q. coccinea Muench. Scarlet Oak. — Dry soil, in the southern 

 part of the valley; frequent. Grows to a large size only in New 

 Marlboro and Sheffield. 



