(i6o) 



or less, the margins minutely serrulate at least below ; spikes 

 3 or 4, 3-6-flovvered, the uppermost staminate above with 1 

 or 2 pistillate flowers below, the others pistillate, the lower 1 

 or 2 on filiform erect stalks 1.5 cm. long or less, subtended 

 by leaf-like bracts which sometimes exceed them ; scales 

 oval, brown, acute, or obtusish, distant on the filiform rachis, 

 nearly 2 mm. long ; perigynia spindle-shaped, few-nerved, 

 3-3.5 mm. long, less than 1 mm. wide, readily deciduous, 

 the orifice entire ; stigmas 3. 



Dawson, R. S. Williams, June 12, 1899 (type); also, by 

 the same collector, near the same locality August 1, 1899. 



Carex teretiuscula Good. Klondike River Bottom ; near 

 mouth of Klondike (Williams). 



Carex tenella Schk. Klondike River Bottom (Williams). 



Carex capitata L. Ten miles above Lebarge ; Dawson 

 Swamp (Williams). 



Carex Redozvskyana C. A. Meyer. Bennett City (Wil- 

 liams). 



Carex Bonanzensis Britton, sp. nov. 



Group of C. canescens. Glabrous ; culms about 4 dm. 

 high, roughish above. Leaves nearly equalling the culm, 

 very rough-margined, 2 mm. wide. Spikes about 7, sessile, 

 the upper clustered, the lower somewhat separated, oblong, 

 obtuse, about 8 mm. long, and 3 mm. thick, the lowest sub- 

 tended by a filiform flattened serrulate bract 2-2.5 cm - l° n g '■> 

 scales ovate, with broad brown margins, shorter than the 

 perigynia, the lower acute, the upper obtuse ; perigynia 

 nearly white, plano-convex, glabrous, rather strongly several- 

 nerved on both faces, 1.5 mm. long, 1 mm. wide, minutely 

 beaked. 



Mouth of Bonanza Creek, R. S. Williams, June 18, 1899. 



Carex tenuiflora Wahl. Dawson (Williams). 



Carex lagopina Wahl. White Pass (Williams). 



Carex fraticola Rydb. Walker Gulch (Williams). 



Family Juncaceae. 



Juncus Balticus L. Near Stewart River (Williams). 

 Juncus Richardsonianus Schultes. Near Indian River 

 (Tarleton). 



Juncus Mertensianus Bong. Bennett City (Williams). 



