1919] Flora of the Boston District,—— XXX. 79 
OXALIDACEAE. 
OXALIS. 
O. americana Bigel. (0. Acctosella L. of American authors. See 
RHODORA xx. 76, 1918). Salisbury (R. Dodge, Aug. 12, 1890); moist 
rich woods, Concord ( Horace Mann, , 1862; introduced by Minot 
Pratt, see Ruopora i, 170, 1899); Purgatory Swamp, Norwood (F. S. 
Collins & C. W. Swan, June 18, 1883). 
O. corniculata L. (0. repens 'Thunb. of Gray's Manual, 7th Ed.). 
A rare weed, in garden at Andover ( 4. S. Pease, July 4, 1902); abund- 
ant in greenhouses at Cambridge, Dorchester, Wellesley and Easton. 
O. europaea Jord. (0. corniculata L. of Gray's Manual, 7th ed. 
See No. 227, Plantae Exsiccatae Grayanae.) Fields, gardens and 
waste places, very common throughout. 
O. filipes Small. Dry soil, rare; Wayland, Sherborn, Milton, 
Walpole. 
O. stricta L. Dry or sandy soil, occasional (eleven stations). 
O. violacea L. Open woods and ledges, rare; Ipswich (Wm. 
Oakes), Belmont, Waltham, Weston, Arlington, Lincoln, Concord. 
GERANIACEAE. 
ERODIUM. 
E. Borrys Bertol. Introduced in wool-waste; Tewksbury (E. 
F. Williams, B. L. Robinson & W. P. Rich, Nov. 4, 11, 1900); West- 
field (C. W. Swan, no date); Boston (D. Murray, ——, 1863). Native 
of southern Europe. 
E. ciconium (L.) Ait. Wool-waste dump, Westford (Miss E. F. 
Fletcher, June 26, 1913 et seq. Specimen in herb. Gray). See 
Ruopora xv. 172, 1913. Native of Mediterranean region and the 
Orient. 
E. ciconrum (L.) Ait., var. TENUISECTUM Nym. Woolwaste dump, 
Westford (Miss E. F. Fletcher, ——, 1915. Specimen in herb. Gray). 
'There are not any European specimens of this variety in the Gray 
Herbarium, but these specimens fit the published description. See 
