212 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 



CYNOSURUS. Dog's Tail Grass. 



C. CRISTATUS L. — Occasional in grass land. Lenox; Stockbridge. 



DACTYLIS. Orchard Grass. 



D. GLOMERATA L. ORCHARD Grass. — In shade about houses, 

 along roadsides, in open woodland; common. 



DANTHONIA. Wild Oat Grass. 



D. compressa Aust. — Dry open woods, rocky summits and upland 

 pastures; frequent. 



D. spicata (L.) Beauv. White Top. — Meadows, pastures and 

 rocky hillsides, chiefly in poor soil ; common, especially on the upland. 



DESCHAMPSIA. 



D. caespitosa (L.) Beauv. — Borders of mowing-fields, Whitney 

 Place, Washington; Lenox. 



Appears to have been introduced with grass seed. 



D. flexuosa (L.) Trin. Common Hair Grass. — Rocky woods, 

 especially on exposed ledges; common in the valley. On Greylock 

 almost to the summit. 



DIGITARIA. Finger Grass. 

 iSytitherisma 111. Fl. ed. 2.) 



D. filiformis (L.) Koeler. — Sandy soil; locally common in the 

 southern part of Sheffield. 



D. IscHAEMUM Schreb. ex Muhl. — {D. humifnsa Man. ed. 7; vid. 

 Rhodora, 18: 231, 1916.) 



Dry sterile soil, fields, roadsides; common. 



D. SANGUiNALis (L.) Scop. Crab Grass. — Waste and cultivated 

 ground; common. 



ECHINOCHLOA. 



E. Crusgalli (L.) Beauv. Barnyard Grass. — About barnyards 

 and on muddy shores; common. 



E. FRUMENTACEA (Roxb.) Link. — Cultivated ground, Stockbridge; 

 roadside, Great Barrington; cultivated ground, Sheffield. First 

 noted in 1920. 



