310 T. Holm — Studies in the Cyperacece. 



Gar ex chionophila sp. n. 



Rhizome csespitose with persisting, brown leaf -sheaths ; leaves 

 longer than the culm, narrow but flat, scabrous ; culm from 30 

 to 40 cm in height, erect, slender, trigonous, scabrous, phyllopo- 

 dic ; spikes four to five, the terminal staminate, the lateral.pis- 

 tillate or with a few staminate flowers at the apex, contiguous, 

 sessile or the lowest one peduncled, erect, dense-flowered, cylin- 

 dric and until 4 cm in length, subtended by sheathless bracts with 

 blades about as long as the inflorescence ; scale of staminate 

 flower oblong, obtuse, purplish with pale midvein ; scale of pis- 

 tillate flower ovate-oblong, obtuse, black with pale midvein, 

 shorter and much narrower than the perigynium ; perigynium 

 minutely stipitate, erect, pyriform, granular above, nerveless, 

 light green above, whitish below, the beak very short, entire ; 

 stigmata two or three. 



Collected in a brook, West Dawson, Yukon, by Professor 

 John Macoun (No. 53,849). 



Allied to C. sphacelata but is readily distinguished by the 

 characters enumerated above; it is altogether a more graceful 

 plant with slender culms and narrower leaves, besides of a much 

 lighter color. 



Car ex consimilis sp. n. 



Rhizome horizontal, stoloniferous with persisting light brown 

 scale-like leaves ; leaves about as long as the culm, narrow with 

 revolute margins, scabrous ; culm about 25 cm in height, erect, 

 stiff, triangular and scabrous, phyllopodic; spikes four, the 

 terminal staminate, the lateral pistillate or sometimes androgy- 

 nous, contiguous, sessile or the lowest one short-peduncled, 

 erect, subtended by very short, sheathless bracts ; scale of stami- 

 nate flower linear-lanceolate, light brown ; scale of pistillate 

 flower ovate-lanceolate, acute to obtuse, black with the mid- 

 vein obsolete, longer, but narrower than the perigynium ; peri- 

 gynium minutely stipitate, erect, orbicular, granular above and 

 sharply denticulate along the upper margins, two-nerved, pur- 

 plish spotted above, light brownish green below, the beak short, 

 entire ; stigmata two, style short but exserted. 



Collected near Klondike, Indian Divide, Yukon, by Professor 

 John Macoun (No. 53,878). 



In habit not unlike C. hyperborea Drej., but the perigynium 

 is very different. 



Car ex cyclocarpa sp. n. 



Rhizome stoloniferous with persisting, purplish scale-like 

 leaves; leaves shorter than the culm, flat, but narrow; culms 

 from 12 to 42 cm in height, slender, but erect, or slightly curved, 



