104 Rhodora [JUNE 
REPORTS ON THE FLORA OF THE BOSTON 
DISTRICT,— XI. 
CYPERACEAE. 
ERIOPHORUM. 
E. callitrix Cham. Cold bogs; reported from several scattered 
stations. 
E. gracile Roth. Cold bogs and swamps. Nine scattered sta- 
tions in northeastern and central portions. An early bloomer which 
has escaped many collectors. 
E. tenellum Nutt. Boggy meadows, well distributed. 
E. virginicum L. Bogs and wet meadows; common throughout. 
E. virginicum L., var. album Gray. Danvers (J. H. Sears, 
Sept. 1, 1885); Harland St. meadows, Milton (J. R. Churchill, Sept. 
1, 1895). 
E. viridi-carinatum (Engelm.) Fernald. Boggy meadows and 
swamps. Not reported from the extreme southeastern portion, but 
abundant elsewhere. 
FUIRENA. 
F. squarrosa Michx. Shores of Round Pond, Tewksbury, 1854 
(Wm. Boott) to the present. 
HEMICARPHA. 
H. micrantha (Vahl) Pax. Sandy shores of ponds, rare; North 
Andover, Andover, Winchester, Concord, Wayland, Framingham, 
Sherborn. 
RYNCHOSPORA. 
R. alba (L.) Vahl. Meadows and bogs; not reported from the 
extreme southeastern portion, but abundant elsewhere. 
R. alba (L.) Vahl, var. macra Clarke. Fresh Pond, Cambridge 
(Wm. Boott, Aug. 20, 1853); Reund Pond, Tewksbury (M. L. Fernald, 
Sept. 18, 1909). 
