MACKENZIE: NoTES ON CAREX 237 
surfaces and on the margins (towards the base) to strongly 
roughened on both surfaces and to almost denticulate on the mar- 
gins (towards the apex), more or less glaucous, the sheaths gla- 
brous ; terminal 2-4 spikes staminate, erect, scattered, 1-4 cm. 
long, 3-7 mm. wide, the upper peduncled, the others sessile or 
nearly so, the numerous closely appressed scales oblong- obovate, 
acute to aristate, from straw-colored to purplish, with hyaline 
margins and usually lighter midrib ; pistillate spikes two to four, 
usually widely separated, erect, short-peduncled, stout, densely 
flowered, oblong-cylindric, 1-7.5 cm. long, 1 cm. wide, the very 
numerous perigynia closely appressed, ascending, in several-many 
ranks ; bracts leaf-like, exceeding the culms, the lower sheaths from 
little to strongly developed; scales ovate, the lower aristate and 
often exceeding the perigynia, the others gradually shorter until 
those in the upper part are acute and but half the length of the 
perigynia, straw-colored to purplish with hyaline margins and 
lighter center, very variable; perigynia lanceolate-ovoid, flattened 
but thick, 6 mm. long, 2.5 mm. wide, impressed-nerved but appear- 
ing nearly nerveless at maturity, glabrous, the walls thick and 
leathery, rounded at base, tapering to the short bidentate beak, 
the teeth erect or slightly spreading, 0.5 mm. long ; achenes tri- 
angular-obovoid, 2 mm. long, 1.25 mm. wide, not filling perigy- 
nia, tipped by the persistent slightly flexuous style ; stigmas three. 
The following specimens have been seen : 
Ouro: Green Spring, Beardslee, June, 1890. 
INDIANA : Wells County, Deam ; Bluffton, Deam, May 28, 1899. 
TENNESSEE: Jackson, S. M7. Bain 488, May 10, 1893. 
Missourr: Courtney, Jackson County, Bush 702, May 23, 
1894 ; Jackson Co., Mackenzie 822, April 27, 1895; Butler County, 
Bush 2554 and 2660, May 1, 1905. 
Kansas: Quindaro, Mackenzie, May 30, 1897; Argentine, 
Mackenzie, April 26, 1896. 
InpDIAN TERRITORY: Catoosa, Bush ro28, May 14, 1895; 
Sapulpa, Bush 957, May 9, 1895; Arkansas, Bush 985, May 8, 
1895. 
ARKANSAS: Moark, Bush 2609, May 3, 1905; Miller Co., 
Bush 1394, April 21, 1902; Craighead Co., Eggert, May 7, 1893. 
Texas: Grand Saline, Reverchon 2441, April 9, 1901 ; Dallas, 
Reverchon 3311*, April, May; Alvin, S. 4. Tracy goo8, April 
II, 1906. 
Louisiana: Alexandria, Hadle. 
Araspama: Mobile, C. F. Baker 1555, April 26, 1898. 
