HOFFMANN: FLORA OF BERKSHIRE COUNTY. 219 
P. agrostoides Spreng. — Sandy shore of Big Pond, Otis; low 
meadows, Sheffield. 
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, INIt. \Yashington. 
P. capillare L., var. occidentale Rydberg. Old-witch Grass. — 
(P. capillare Man. ed. 7 in part and 111. Fl. ed. 2.) 
Sandy soil, ledges and waste ground; common. 
P. clandestinum L. — Thickets, chiefly in alluvial soil; frequent. 
Altitude 1500 feet, Hoosac Mt., Florida. 
P. dichotomum L. — Dry rocky woods; frequent in tlie valley. 
P. heterophyllum Bosc. — (P. columbianum Man. ed. 7 and 111. 
Fl. ed. 2; rid. Rhodora, 14: 171, 1912.) 
Dry rocky or sandy woods; occasional in the southern and western 
parts of the County. Stockbridge; West Stockbridge; Alford; 
Sh(>ffield. 
P. huachucae Ashe. — Meadow, West Stockbridge. 
var. fasciculatum (Torr.) Hubbard. — (P. huachucae, var. silvicola 
Man. ed. 7; P. huachucae 111. Fl. ed. 2 in ])art; 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 rieli woodland; com- 
mon in the valley. Not noted on the plateau. 
P. linearifolium Scribn. — Dry open woods and sandy lields; com- 
mon. 
P. MILIACEUM L. FruoPK.w Millet.— Railroad track, Washing- 
ton; waste ground, (Jreat Barrington. 
P. sphaerocarpon FU. — Boiders of dry woods. (Iri-at Harrington; 
open glade, Sliclli(>ld. 
P. Strictum I'ursh. — {!'. di'iiauperaitnu Man. ed. 7 and ill. !•'!. ed. 
2; vid. Rhodora, 14: l(i9, 1912.) 
Sterile fields, dry open woods and rocky ledges; freciuont. 
P. tennesseense .\she. — Clearings, wood roads, dry or wet woods; 
river banks; fre((uent. 
An aberrant form from West Stockbri<lge clos(>ly apj)roaehes P. 
Lindheimeri Nash, according to Mr. F. Tracv Hubbard. 
