HOFFMANN: FLORA OF BERKSHIRE COUNTY. 209 



GRAMINEAE. GRASS FAMILY. 

 AGROPYRON. 



A. caninum (L.) Beauv. Awned Wheat Grass. — Rocky hills 

 and ledges; occasional in the southern part of the valley. West 

 Stockbridge Mt.; Tom Ball, Alford; Bear and Monument Mts., 

 Great Barrington; New Marlboro; Sheffield. 



forma glaucum Pease & Moore. — Vid. Rhodora, 12: 71 (1910). 

 Limestone ledges, New Marlboro and Sheffield. 



Plants glaucous. 



var. tenerum (Vasey) Pease & Moore. — Vid. Rhodora, 12: 71 

 (1910). {A. tenerum 111. Fl. ed. 2.) 



Occasional on limestone hills, Sheffield. 



Spikes generally long and slender (average length about 12-14 cm.), 

 3-12 mm. wide, awnless or with awns up to 6 mm. in length. 



A. REPENS (L.) Beauv. Couch or Quick Grass. — Fields, road- 

 sides, railroad embankments and cultivated ground; common. 



AGROSTIS. Bent Grass. 



A. alba L. White Bent Grass. — Meadows, fields, borders of 

 streams and woods; common. 



var. aristata Gray. — Bank of Deerfield River, Florida; sandy 

 roadside, Lanesboro (Churchill). 



var. maritima (Lam.) G. F. W. Mey. — (J. mdrit'nua 111. Fl. ed. 2.) 



Muddy shores and ditches; frequent in the valley, forming thick 

 mats. In full blossom on Aug. 1 at Nigger Pond, Stockbridge, 

 probably retarded by having been submerged. 



var. vulgaris (With.) Thurb. Red Top. — Fields, borders of 

 woods and streams, occasionally in damp woods and swamps; common. 



A form with elongated infiorescence (,1. si/lraticd L.), occasional. 



A. hyemalis (Walt.) BSP. Hair Grass. — Dry fields, rocky open 

 hillsides, roadsides and wet sandy soil; common. 



A. perennang (Walt.) Tuckerm. Tiii.\ Grass. — Low shatlcd 

 ground and cool woods; common. 



ALOPECURUS. F..XTAII. Grass. 



A. aristulatus Midix. I'i.oatinc; I'oxtaii.. — (.1. (iniirtthitu.-i, 

 var. aristuldtii.s Man. ed. 7; rid. Rhodora, 19: Km, 1917.) 

 Muddy shores and shallow water; fre(|uent in tiie valley. 



