82 Rhodora [APRIL 
P. polygama Walt., forma pallida Britton. Sandy margin of 
Winter Pond, Winchester (M. L. Fernald & Bayard Long, June 22, 
1913. Specimen in herb. N. E. Botanical Club). 
P. sanguinea L. Swamps and fields, common throughout; 
“ often varying to white ” (J. Robinson, Fl. Essex Co. 44, 1880). This 
is forma albiflora Millsp. Fl. W. Va. 333, 1892. 
P. verticillata L. Dry soil, common. 
P. verticillata L., var. ambigua (Nutt.) Wood. "This extreme 
form is apparently very rare, but forms tending toward it are occa- 
sional. 
EUPHORBIACEAE. 
ACALYPHA, 
A. gracilens Gray. Dry soil, frequent. 
A. virginica L. Fields and waste places, common. 
CROTON. 
C. caprratus Michx. S. Boston flats (C. E. Perkins, Aug. 27, 1879. 
Specimen in herb. N. E. Botanical Club). Waif from the West. 
C. TEXENSIS (Klotzsch) Muell. Arg. Filled land, Back Bay, Boston 
(C. W. Swan, Sept. 9, 1890. Specimens in herb. sind and Yale). 
Waif from the Southwest. 
EUPHORBIA. 
E. comRortATA L. Sparingly introduced at Lowell, Concord, 
Wellesley, Natick and Sherborn. 
E. Cyparisstas L. Cemeteries, fields and roadsides, common 
throughout. 
E. Esuta L. Fields and waste places; very abundant in Salisbury, 
Amesbury, Newburyport, Rowley and Newbury; Ipswich (Wm. Oakes), 
also sporadic at Somerville, Boston and West Roxbury. 
E. HkuroscoprA L. Waste places at Melrose, Somerville, Cam- 
bridge, Roxbury and Scituate. 
