56 



[yl inch or less in length), their axes ascending; bracts at the 

 base of the head small, or none. Dry low grounds ; generally 

 distributed in the Northern States as far west as Dakota and 

 Nebraska. Ordinarily included in var. cristata. 



Van REDUCTA, Bailey, 1. c. 



C. ■ scoparia, var. moiiilifonnis^ Tuckm. Enum. Meth. 1 7 



(1843). 

 C, cristata, Boott, 111. t 373 (1862). 



C. lagopodioides, var. moniliformis, Olney, Exsicc. fasc. ii. No. 

 8 (1821), V.S.; Bailey, Bot. Gaz. x. 380. 



Culm slender, especially above, surpassing the long-pointed 

 and lax leaves; spikes two to ten, small, nearly globular or some- 

 what contracted below (three lines or less in diameter), all dis- 

 tinct, the lowest alternate ; perigynium conspicuously spreading. 

 Connecticut to New Brunswick, and west to Minnesota. 



-JJ. — CarEX GRISEA, Wahl., var. (?) RIGIDA. 



Whole plant rigid ; leaves narrow, about the length of the 

 culm; staminate spike an inch long, mostly peduncled ; pistillate 

 spikes two or three, widely scattered, peduncled, or the upper 

 sessile, an inch or less long, loosely flowered; perigynium long- 

 elliptic, prominently trigonous, not turgid, finely striate, di- 

 stichously arranged, longer than the broad-based and prominently 



awned scale. Sellersyille, Pennsylvania, Fretz ; Faulkland, Dela- 

 ware, Commons ; Florida, Chapmaii, A singular plant, which I 

 do not understand. Chapman's plant, which Dr. Boott referred 

 to C, griscay var aftgustifolia, is the least characteristic of the 

 three. 



78. — CAREX FILIFORMIS, L., var. AUSTRALIS. 



Spikes commonly thicker than in the type; perigynium oblong 

 or elliptic, usually twice, or nearly so, as long ; scales much longer 

 and strongly acuminate. Central Europe : common. The Scan- 

 dinavian plant, which Linnaeus described, appears to be the same 

 as the American. 



79. — Carex Donnell-Smitiiii. 



One of the Polystachycs^ standing next to C. melano- 

 sperma^ Liebm. : Plant tall and stout (3 feet high), the 

 lower sheaths purple and becoming shreddy ; leaves as 

 long as the culm, rather stiff, roughish on the margins; spikes 

 twenty or more, one to three inches long, rather loosely flowered, 



