170 Rhodora [SEPTEMBER 
MORUS. 
M. atsa L. Persistent and escaped; reported at twelve scattered 
stations. 
M. RUBRA L. Ipswich, an old tree (J. Robinson, Aug. 8, 1876); 
Cambridge, dump near University Press (A. S. Pease, Oct. 12, 1908); 
occasional roadside escape, Southborough (A. J. Eames, July 31, 
1910). Native in western New England, also west and south. 
PARIETARIA. 
P. pennsylvanica Muhl. Swampscott (J. H. Sears, July 25, 
1885); waste ground, Percival St., Dorchester (J. R. Churchill, Sept. 
22, 29, 1901); Concord (Minot Pratt) according to Dame & Collins, 
Fl. Middlesex Co. 92, 1888; Hingham according to Bouvé, Botany 
of Hingham, in History of Hingham, i. pt. 1, 124, 1893. 
PILEA. 
P. pumila (L.) Gray. Shady places in rich soil, frequent. No 
reports from southern towns. 
ULMUS. 
U. americana L. Moist soil, woods, fields and roadsides; common 
throughout. . 
U. campestris L. Established in roadside thicket, Danvers 
(R. B. Mackintosh, December, 1903); Medford (L. L. Dame, —, 1887; 
C. H. Morss, May 27, 1899); Seaver St., W. Roxbury (C. W. Swan, 
May 29, June 9, 1883); roadside escape, Canton (G. G. Kennedy, 
—, 1891). 
U. fulva Michx. Rocky woods, rare; Georgetown, Boxford, 
Wenham, Bedford, Concord, Brookline, Dorchester. Probably intro- 
duced at last station. 
U. scaBRA Miller. A small selfsown tree, now extinct, Cambridge 
(W. Deane, June 29, 1895); Dedham (6. G. Kennedy, May 24, 1891); 
roadside, Milton (G. G. Kennedy, June 5, 1891). This is the Scotch 
or wych elm, which ranges from Europe to Japan. 
