14 MN v^ 4 ae 
1913] Reports on the Flora of the Boston District,——XVI 55 
Faxon, Oct. 7, 1878; E. Faxon & J. R. Churchill, Oct. 17, 1884; 
W. H. Manning, Aug. 15, 1894); Norwood (E. F. Williams, Sept. 15, 
1895); Waltham (S. E. French, Sept. 10, 1888). 
TRAGUS. 
T. RAcEMOSUS Scop. South Boston flats (C. E. Perkins, July 20, 
1882, and Aug. 20, 1882). A fugitive plant, native in middle and 
southern Europe, the Canary Islands, Afghanistan and India. 
SORGHASTRUM. 
S. nutans (L.) Nash. Dry sandy soil, frequent throughout. 
SORGHUM. 
S. HALEPENSE (L.) Pers. South Boston (C. E. Perkins, Sept. 1 
and 27, 1880); dump, Watertown (R. Hoffmann, Sept. 18, 1899). 
S. vuLGARE Pers. Dumps and made land; Lawrence, Brookline, 
Boston and South Boston, not collected recently. Probably seeded 
from corn-brooms. 
DIGITARIA. 
D. filiformis (L.) Koeler. Dry sterile soil; frequent except in 
Essex County, where it is reported only from Andover. 
D. numirusa Pers. Dry soil; frequent from Hingham and Quincy 
northward, probably throughout. 
D. SANGUINALIS (L.) Scop. Waste and cultivated ground, a 
very common weed throughout. 
PASPALUM. 
P. Muhlenbergii Nash. Fields and pastures, very common 
throughout. 
P. psammophilum Nash. Dry sand, Halifax (C. H. Knowlton & 
W. P. Rich, July 15, 1906); Duxbury (C. H. Knowlton, Sept. 10, 1911). 
See Ruopora xiv. 174, 1912. 
