150 Rhodora [AvavsT 
HORDEUM. 
H. pisricHUM. L. West Boston dump (C. W. Swan, Sept. 19, 
1883, specimen in herb. Yale University. F. Lamson-Scribner has 
written on the label, “ Two-rowed variety.") From Tartary. 
H. jubatum L. Border of marshes and dry gravelly waste places. 
Scattered over the eastern and southern portions of the district. 
H. maritimum With. South Boston (C. E. Perkins, May 28 and 
June 29, 1879, specimen in herb. N. E. Botanical Club); “Billerica, 
in wool waste (Dr. C. W. Swan). Adv. from Eu.” according to Dame 
& Collins, Fl. Middlesex Co. 134, 1888. 
H. MURINUM L. Dumps and wool waste, Dracut, Lowell, North 
Chelmsford, Billerica, Charlestown and South Boston. Specimens in 
Gray Herb. and in herb. Yale University and N. E. ms Club. 
Native of Europe. 
H. soposum L. Filling, South Boston (H. A. Young, June 21, 1879, 
specimen in herb. N. E. Botanical Club). 
H. vuLcarE L. Barley. Waste ground. Sparingly from Essex, 
Beverley, Salem, Revere and Cambridge. Originally from western 
Asia. 
ELYMUS. 
E. australis Scribn. & Ball. Dry woods, West Quincy (J. R. 
Churchill, July 11, 1891); dry woods, Blue Hill, Canton (J. R. Church- 
ill, Aug. 10, 1887, and Aug. 1, 1897). 
E. brachystachys Scribn. & Ball. Andover (A. S. Pease, Sept. 24, 
1901); Sunset Rock, Lee's Cliff, Concord (E. S. Hoar, Sept. 6, ——); 
rocky woods, Great Blue Hill, Canton (4. S. Pease, Nov. 8, 1901); 
Cohasset (C. E. Faxon, no date). 
E. canadensis L. Sandy soil and rocky woods; Amesbury, West 
Newbury, Georgetown, Dracut, Lowell, Boston, Watertown and 
Dedham. “Merrimack river banks, from Lawrence to Newburyport” 
according to Robinson, Fl. Essex Co. 128, 1880. 
E. striatus Willd. Dry woods and banks; Plum Island, George- 
town, Ipswich, Gloucester, Andover, Dracut, Lowell, Woburn, Mel- 
rose, Revere and Milton. 
E. virginicus L. Banks of streams, borders of woods and edges of 
salt marsh. Frequent in the northern two-thirds of the district. 
