﻿608 Mackenzie: Notes on Carex 



Illinois: Fountaindale, Winnebago County, Behh (P., K. M.). 



South Dakota: Jones Island, Williams i8'/6, August 15, 

 1894 (K. M.). 



North Dakota: Butte, Benson County, Lunell, July 26, 1914 

 (K. M.); Lake Ibsen, Benson County, Lunell, July 4, 1914 (K. 

 M.); Towner, McHenry County, Lunell, July 21, 1908, Sept. 10, 

 1908, June 12, 1913 (K. M.); Leeds, Benson County, Lunell, 

 June 2, 1901 (K. M.). 



New Mexico: Brazos Canyon, Rio Arriba County, Standley 

 & Bollman J 1036, Sept. i, 1914 (K. M.). 



Carex festucacea Schk.; Willd. Sp. PL 4: 242. 1805 

 Carex straminea var. festucacea Tuckerm. Enum. Meth. 18. 1843. 



Densely cespitose, the culms slender but rather stiff, erect, 

 5-9 dm. high, sharply triangular and roughened on angles above, 

 much exceeding leaves, the lower leaves reduced, the lower nodes 

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

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

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

 sparingly septate-nodulose, conspicuously hyaline ventrally and 

 prolonged upward. Inflorescence of four to ten spikes, in a monili- 

 form head 2.5-6 cm. long, the spikes gynaecandrous, rounded at 

 apex, 6-16 mm. long, 5-6 mm. wide, with ten to twenty appressed- 

 ascending perigynia above with rather conspicuous tips, usually 

 strongly clavate with numerous staminate flowers at base ; lowest 

 bract occasionally somewhat developed, the others scale-like. 

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

 tinged, narrower and shorter than perigynia. Perigynia green or in 

 age straw-colored, 3.5 mm. long, 2 mm. wide, the body orbicular, 

 thick, 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, abruptly contracted into a beak nearly length of 

 body, the beak tawny-tipped, obliquely cut dorsally, flat and 

 strongly serrulate as is upper half of perigynium body. Achenes 

 oblong-ovoid, plano-convex, light-brown, short-stipitate, 1.5 mm. 

 long, nearly i mm. wide, apiculate, the style slender, straight- 

 Stigmas two. 



Specimens examined 



Massachusetts: "Massachusetts," B. D. Greene (C). 



New York: Penn Yan, Sartwell (N. Y.). 



New Jersey: Farmingdale, Monmouth County, Long & 



