1919] Clokey,— Carex Notes 83 
E. hirsuta (Torr. Wiegand. Dry sand, especially by railways; 
Lowell, Concord, Ayer, Cambridge, S. Boston, Wellesley, Natick. 
E. maculata L. Dry sand and gravel, very common throughout. 
E. MARGINATA Pursh. Vacant lot, Boylston St., Boston, now 
extinct (W. P. Rich, Aug. 24, 1879. See Rnopona x. 152, 1908); 
waste place by (or in) salt marsh, a few plants (F. W. Grigg, Aug. 9, 
1913. Specimens in herb. F. W. Grigg). 
E. PrEPLus L. Waste places and gardens; sporadic at Salem, 
Woburn, Somerville and Lynn; Tremont St., Boston (W. Boott, Sept. 
11, 1853). 
E. PLATYPHYLLA L. Rubbish heap, not persistent, Cambridge 
(W. Deane, Oct. 10, 1885). 
E. polygonifolia L. Seashore sands from Salisbury to Duxbury. 
E. Preslii Guss. Sandy soil and waste places, rare (twelve stations). 
E. prostrata Ait. Cotton waste, Malden (F. S. Collins, Sept. 
20, 1890. Specimen in herb. N. E. Botanical Club). Native of 
tropical America. ; 
MERCURIALIS. 
M. annua L. Newburyport (* E. U.” 1880); E. Somerville 
freight-yards (A. S. Pease & A. H. Moore, Oct. 20, 1903); Boston (J. 
A. Lowell, no date); yard, Newtonville (F. W. Grigg, Aug. 24, 1912). 
RICINUS. 
R. communis L. Dump, Cambridge (M. L. Fernald, Sept. 26, 
1908); railway dump, Dedham (Sydney Harris, Aug. 22, 1897; 
E. F. Williams, Oct. 2, 1898). 
CH acr Committee on 
WALTER DEANE Local Flora. 
CAREX NOTES. 
Ira W. CLOKEY. 
CAREX arapahoensis, spec. nov. Growing in small clumps; the 
culms stiffly erect, rather stout, 2-4 dm. high, somewhat exceeding 
the leaves, minutely rough on the angles below the head, aphyllopodic. 
Leaves with well developed blades 4-7 to a fertile culm, on the lower 
