124 Rhodora [JULY 
HIEROCHLOE. 
H. odorata (L.) Wahlenb. Meadows and marshes, both brackish 
and fresh; common along the coast, inland on the Concord and 
Shawsheen Rivers; meadow, frequent, Wellesley (K. M. Wiegand, 
May, 1912). 
ORYZOPSIS. 
O. asperifolia Michx. Dry open woods, frequent. 
O. pungens (Torr.) Hitche. Dry sandy fields, and open woods, 
frequent throughout. 
O. racemosa (Sm.) Ricker. Dry rocky woods, rare; Georgetown, 
Essex, Malden, Woburn. “Melrose (Wm. Boott; specimen in herb. 
of)." according to Dame & Collins, Fl. Middlesex Co. 126, 1888, as 
Oryzopsis melanocarpa Muhl. : 
STIPA. 
S. avenacea L. Dry open woods, rare; Wakefield, Woburn, 
Malden, Medford, Milton. 
ARISTIDA. 
A. dichotoma Michx. Dry sandy soil, common throughout. 
A. gracilis Ell. Sandy soil, frequent from Hingham and Sharon 
northward. 
A. purpurascens Poir. Dry sandy soil, scattered stations, 
throughout. 
A. tuberculosa Nutt. Plum Island (J. Robinson, Aug. 31, 1876); 
Ocean Spray, Winthrop (H. A. Young, Sept. 28, 1878); Winthrop 
(C. E. Perkins, Sept. 6, 1882); Winter Pond, Winchester (C. F. 
Perkins, Sept. 6, 1882). The last reference is probably an error, 
since this species is ordinarily confined to coastal sands, and Perkins 
collected it on September 6, 1882, at Winthrop, as cited above. This 
is the same date that appears with the specimen said to come from 
Winter Pond. The field-label accompanying the Winthrop material 
is in Perkins's own hand, but the material labelled “Winter Pond” 
is marked in another band, presumably through a confusion of labels. 
