HOFFMANN: FLORA OF BERKSHIRE COUNTY. 255 



Q. ilicifolia Wang. Bear Oak; Black Scrub Oak. — Sandy soil 

 or rocky summits; common in the Sheffield sand-plain and on the 

 summits of the southern Taconics. 



Q. macrocarpa Michx. Bur Oak; Mossy-cup Oak. — Swamps, 

 open bottom-land and hillsides; frequent in the valley. 



Q. Muhlenbergii Engelm. Yellow Oak; Chestnut Oak.— 

 On limestone ridges in the extreme southern part of the valley. One 

 tree in Great Barrington (Sargent) ; frequent in Sheffield. 



Q. prinoides Willd. Scrub Chestnut Oak; Chinquapin Oak. — 

 Common on the sand-plain in southern New Marlboro and Sheffield. 



Q. Prinus L. Chestnut Oak. — Rocky hillsides; common in the 

 southern part of the valley, particularly west of the Housatonic River, 

 occasional to the eastward (Monterey). Absent from the plateau. 



Q. rubra L. Red Oak. — Woods; common throughout. The 

 only oak found on the plateau. 



Q. velutina Lam. Black Oak. — Rocky woods and dry soil; 

 frequent in the southern part of the valley. 



URTICACEAE. NETTLE FAMILY. 

 BOEHMERIA. False Nettle. 



B. cylindrica (L.) Sw. False Nettle. — Shaded swamps, river- 

 banks and low ground; frequent. 



CELTIS. Hackberry. 



C. occidentalis L. Hackberry; Sugarberry. — Hackberries 

 are occasional along the Housatonic River in Stockbridge, Great 

 Barrington and Sheffield, growing either in meadows on the edge of 

 the river or in Sheffield on ledges above the river. The trees are for 

 the most part small, but in Stockbridge there is one with a girth of 

 nine and a half feet. Specimens from the three towns have been sub- 

 mitted to Dr. Rehder, who has deterniined some from Stockbridge 

 and Sheffield as typical, and writes of two specimens from Stockbridge, 

 as follows: 



" The specimen collected Aug. 20, 1920, I refer to C. occidentalis, 

 var. canina (Raf.) Sarg. (in Bot. Gaz. 67: 217, 1919), though the 

 under side of the leaves is as pubescent as in var. rra.tsifoUa, but the 

 leaves are not scabrate above. The specimen collected on Aug. 12, 



