HOFFMANN: FLORA OF BERKSHIRE COUNTY. 219 



P. agrostoides Spreng. — Sandy shore of Big Pond, Otis; low 

 meadows, SheflBeld. 



P. boreale Nash. — Borders of woods and fields, roadsides; com- 

 mon on the plateau; occasional in the valley, Cheshire (Churchill); 

 low ground, Stockbridge; border of marsh, ^Monterey; upper part of 

 The Dome, ]\It. Washington. 



P. capillare L., var. occidentale Rydberg. Old-witch Grass. — 

 (P. capillare ^lan. ed. 7 in part and 111. Fl. ed. 2.) 



Sandy soU, ledges and waste ground; common. 



P. clandestinum L. — Thickets, chiefly in allm-ial soil; frequent. 

 Altitude 1500 feet, Hoosac [Nit., Florida. 



P. dichotomum L. — Dry rocky woods; frequent in the valley. 



P. heterophyllum Bosc. — (P columbianum Man. ed. 7 and 111. 

 Fl. ed. 2; vid. Rhodora, 14: 171, 1912.) 



Dry rocky or sandy woods; occasional in the southern and western 

 parts of the County. Stockbridge; West Stockbridge; Alford; 

 Sheffield. 



P. huachucae Ashe. — INIeadow, West Stockbridge. 



var. fasciculatum (Torr.) Hubbard. — (P. huachucae, var. sihicola 

 Man. ed. 7; P. huachmiae 111. Fl. ed. 2 in part; vid. Rhodora, 14: 171, 

 1912.) 



Dry woods and clearings; common. 



P. implicatum Scribn. — Dry woods, clearings, hillside pastures, 

 wet roadsides; common. 



P. latifolium L. — Thickets and clearings in rich woodland; com- 

 mon in the valley. Not noted on the plateau. 



P. linearif olium Scribn. — Dry open woods and sandy fields; com- 

 mon. 



P. MiLiACEUM L. EuEOPEAx ^NIiLLET. — Railroad track, Washing- 

 ton; waste ground, Great Barrington. 



P. sphaerocarpon Ell. — Borders of dry woods. Great Barrington; 

 open glade, Sheffield. 



P. strictum Pursh. — (P. depauperatum Man. ed. 7 and 111. Fl. ed. 

 2; vid. Rhodora, 14: 169, 1912.) 



Sterile fields, dry open woods and rocky ledges; frequent. 



P. tennesseense Ashe. — Clearings, wood roads, dry or wet woods; 

 river banks; frequent. 



An aberrant form from West Stockbridge closely approaches P. 

 Lindheimeri Nash, according to Mr. F. Tracy Hubbard. 



