424 T. Holm — Studies in the Cyjperacece. 



rib ; pistillate spikes very short, about l^'^"' in length, sessile, the 

 lowest one subtended by a sheathless leaf-like bract, reaching 

 to the base of the staminate spike, the other bracts scale-like, 

 bristle-pointed ; scales (tig. 10) ovate-acuminate, black with 

 excurrent pale midrib ; utricle mostly shorter and broader than 

 the scale (fig. 11), rhombic-oval, compressed, stipitate, granular, 

 brownish green with purplish spots, membranaceous, with a 

 short, straight, emarginate beak, obscurely two-nerved ; stig- 

 mas two with the style enclosed ; caryopsis immature. 



Habitat : JS'orthern Idaho. Eegion of the Coeur d'Alene 

 Mountains ; near mountain streams ; Divide between St. Joe 

 and Clearwater River. Alt. 1,510°^. July 10, 1895 ; collected 

 by John B. Leiberg. 



Carex gymnoclada Holm (figs. 12-14). 

 (6^. Tolmiei Bail, non Boott var. angusta Bail, ex parte.) 



Roots thick, densely hairy ; rhizome stoloniferous with shin- 

 ing, reddish brown persisting, scale-like leaves ; culm from '28 

 to 44"^°" in height, erect, slender, triangular, scabrous, leafless, 

 phyllopodic ; leaves as long as the culm, narrow, flat, scabrous 

 along the margins ; spikes few, mostly three, l'^"' in length, 

 situated near the apex of the culm, but not contiguous ; the 

 terminal staminate or, sometimes, androgynous, short-peduncled ; 

 the scales (fig. 13) somewhat spathulate-oblong, deep brown 

 with pale, not excurrent midrib ; lateral spikes pistillate, mostly 

 two, erect, sessile or nearly so ; bracts not sheathing, with 

 black auricles, the lower leaf-like and reaching to the staminate 

 spike ; scales of pistillate spike (fig. 14) elongated oval, black 

 with pale, not excurrent midrib, shorter and narrower than the 

 utricle; the utricle minutely granular, especially above, with a 

 few prickle-like projections near the beak and around the ori- 

 fice of this, membranaceous, rhombic-oval, stipitate, compressed, 

 with a short, entire beak, yellowish green, obscurely two- 

 nerved ; caryopsis sessile, light brown, oblong ; stigmas two, 

 style flexuous within the utricle. 



Habitat : Eastern Oregon, bos^s of Hurricane Creek, 6,000 

 ft. alt. Aug. 28, 1900, collected^by Wm. C. Cusick. 



In considering these segregates of Carex Tolmiei Boott, C. 

 scopulonim is at once distinguished by being phyllopodic, by 

 its turgid utricle, the two stigmas, etc. ; C. prionophylla differs 

 from (J. Tolmiei especially by its profuse, scabrous covering, 

 its small spikes and two stigmas, and V. gymnoclada by being 

 phyllopodic, besides by the spikes not being contiguous, by 

 the structure of utriculus and the two stigmas. Carex scopit- 

 lorum may be placed among the Microrhynchce Drej., where 

 it is somewhat anomalous, however, on account of the turgid 



