﻿Mackenzie: Notes on Carex 607 



ceeding leaves, dark at base, the lower leaves reduced, the lower 

 nodes not exposed. Leaves with well-developed blades three to 

 five to a fertile culm, on lower third but not bunched, the blades 

 flat, 1.5-2.5 mm. wide, usually 7.5-30 cm. long, the sheaths tight, 

 but obscurely septate-nodulose, conspicuously hyaline ventrally 

 and prolonged upward. Inflorescence of four to eight spikes in a 

 more or less strongly moniliform head 2.5-5 cm. long, the spikes 

 ovoid, gynaecandrous, rounded at apex, 6-10 mm. long, 4.5-6 mm. 

 wide, with ten to twenty appressed perigynia above, the tips ap- 

 pressed, rounded and with few staminate flowers at base (except in 

 terminal spike) ; lowest bract short, setaceous, the upper scale-like. 

 Scales ovate, acute, hyaline with green midvein, and tawny tinged, 

 narrower and shorter than perigynia. Perigynia green or in age 

 straw-colored, ovate, 3.5 mm. long, nearly 2 mm. wide, the 

 body suborbicular, thickish, plano-convex, winged to base, 

 strongly about five-nerved dorsally over achene with an additional 

 nerve in both margins and similarly but less strongly nerved 

 ventrally, rounded and sessile at base, contracted into beak half 

 length of body, the beak tawny tipped, obliquely cut dorsally, 

 flat and strongly serrulate, as is upper half of perigynium body. 

 Achenes broadly ovoid, plano-convex, light brown, substipitate, 

 1.25 mm. long, i mm. wide, apiculate, the style slender, straight. 

 Stigmas two. 



Specimens examined 



Maine: Pittsfield, Knight, June 18, 1905 (K. M.); Mt. Hope, 

 Knight, July i, 1906 (K. M.) ; Orono, Knight, July 15, 1904 (K. M.). 



Massachusetts: Middlefield, Hampshire County, Fernald & 

 Long 8991, 8992, June 26, 1913 (P.); North Adams, Berkshire 

 County, Fernald & Long 8990, June 25, 1913 (P.); "Massa- 

 chusetts, Dewey'' (P.). 



New York: Dundee, Yates County, Wright (K. M.) ; Lansing- 

 burgh, Howe, June, 1891 (N. Y.) ; Oneida County (C). 



New Jersey: Netcong, Morris County, Mackenzie 2078, 

 June 10, 1906 (K. M.). 



Pennsylvania: Ft. Washington, Montgomery County, Long, 

 June 16, 1908 (P.). 



Delaware: Vandyke, Long 1742, May 24, 1909 (P., K. M.). 



Michigan: Emerson, Chippewa County, Dodge, Sept. 5, 1914 

 (K. M.); Imlay City, Lapeer County, Dodge, June 11, 1911 (K. 

 M.) ; Port Huron, Dodge, May 14, 1896 and May 28, 1896 (K. M.). 



Indiana: Bushrod, Deam 10712, May 26, 1912 (K. M.). 



