﻿420 Mackenzie: Notes ox Carex 



wide at base, slender, sharply triangular and from strongly- 

 roughened to nearly smooth above, exceeding leaves, purplish 

 tinged at base, the basal sheaths smooth, not filamentose. Leaves 

 with well-developed blades usually three or four to a fertile culm, 

 on lower fourth, but not clustered, the blades light green, ascend- 

 ing, somewhat nodulose, flat to base with slightly revolute margins, 

 much roughened towards apex, 3-5 mm. wide, 1.5-4 dm. long, the 

 sheaths very membranaceous ventrally, slightly yellowish tinged. 

 Terminal spike staminate, strongly peduncled, linear, 2-4.5 crn- 

 long, 4 mm. wide, the scales oblong-spatulate, obtuse or acutish, 

 brownish with broad lighter center and hyaline margins. Lateral 

 spikes four to six, the upper one or two staminate, the lower 

 pistillate or often staminate at apex, erect, sessile or the lower 

 short-peduncled, linear, 2-10 cm. long, 4-6 mm. wide, with very 

 many ascending perigynia closely (or at base more loosely) packed 

 in several ranks. Lowest bract leaflet-like, from about equalling 

 to exceeding culm, sheathless; the upper much reduced. Scales 

 lanceolate, obtusish, short-acute or acuminate, scarcely i mm, 

 wide, narrower and from somewhat shorter than to strongly 

 exceeding perigynia, light or purplish brown with broad lighter 

 center falling with the perigynia. Perigynia plano-convex, ovate 

 or obovate, closely enveloping achene, at first light green, soon 

 straw-colored, slightly granular-roughened towards apex, puncticu- 

 late, somewhat reddish dotted, few-nerved dorsally, 2-2,5 rnm. 

 long, 1.5-1.75 mm. wide, two-edged, not serrulate, rounded and 

 sessile at base, abruptly apiculate-beaked, the orifice whitish, entire, 

 Achenes lenticular, oblong-quadrate, substipitate, 1.5 mm, long, 

 I mm. wide, minutely apiculate, the short slender style tardily 

 deciduous; stigmas two. 



Specimens examined 



New Jersey: Scudders Falls, Mackenzie 5062, June 9, 1912 

 (K, M.); Red Bank, Gloucester County, Parker, June 6, 1872 (K. 

 M., P.); Delaware, Mackenzie 4998, May 30, 1912 (K. M.); 

 Crosswicks Creek, Mackenzie '5809, May 21, 1914 (K. M.); 

 Coopers Creek, Parker, July 14, 1868 (P.); Camden, Parker 

 (P., C); Swedesboro, Lippincott, May 30, 1892 (P.). 



Penns\xvania: Bethlehem, Schiveinitz; York Furnace, Stone, 

 May 30, 1907 (P.); Penn Valley, Crawford, June 12, 1895 (P.); 

 Tinicum, Saunders, May 20, 1898 (P.); Tinicum Township,' 

 Saunders, June 19, 1897 (P.); Penn Valley, Bucks County, Craw- 

 ford, June I, 1899 (P.); Kintnersville, Van Pelt, June 19, 1905 



