1920] Reports on the Flora of the Boston District —& X XII 75 
TAMARICACEAE. 
TAMARIX. 
T. cgatuica L. Vacant lot, escaped from Fenway, Boston (E. F. 
Williams, May 23, 1909). 
T. PARVIFLORA DC. Waste lands in Boston and Brookline, es- 
caped from cultivation. 
HYPERICACEAE. 
HYPERICUM. 
H. AvREUM Bartram. Roadside, Billerica and Westford (Miss 
E. F. Fletcher, August, 1909). See Ruopora xii. 55, 1910, 
H. boreale (Britton) Bicknell. Shores of ponds and wet places, 
common. 
H. canadense L. Moist or dry soil, very common throughout. 
H. ellipticum Hook. Wet places, frequent northward, local south- 
ward. 
H. gentianoides (L.) BSP. Dry sand and gravel, also on ledges; 
common throughout. 
H. majus (Gray) Britton. Wet or dry soil, common. 
H. mutilum L. Moist soil, common throughout. 
H. rERFoRATUM L. Fields and pastures, especially in dry soil, 
very common throughout. 
H. protiricum L. Weston (E. J. Winslow, July 9, 1911, et seq.). 
H. punctatum Lam. Open places in damp and dry soil, frequent. 
H. virginicum L. Swamps and wet shores, common throughout. 
 ELATINACEAE. 
ELATINE. 
E. minima (Nutt.) Fisch. & Mey. Wet sandy margins of ponds, 
frequent. See RHopona xix. 10-15, 1917. 
C. H. KuowrroN | Committee on 
WALTER DEANE Local Flora. 
