80 JUNCACEAE. 



15. Juncus castaneus Smith. In arctic and alpine regions from Greenl. to 

 Alaska and Colo. Alt. 9500-12,500 ft. Seven Lakes; headwaters of Clear 

 Creek ; Ruxton Park. 



16. Juncus nodosus L. In wet meadows, along rivers and in marshes, from 

 N. Sc. to Mackenzie River, B. C, Va. and Nev. Alt. 4000-6500 ft. Trimble 

 Springs ; Durango ; Colorado Springs ; Ft. Collins ; Poudre Canon. 



17. Juncus Torreyi Coville. In wet places, especially in sandy soil, from 

 N. Y. to Mont, Tex. and Ariz. Alt. 4000-6500 ft. Plains and foot-hills, near 

 Boulder; Huerfano Valley; Walsenburg; Julesburg; Fort Collins; Canon 

 City; Denver; Larimer County; Colorado Springs. 



18. Juncus truncatus Rydb. (/. alpinus insignis of Coulter's Man. ; in 

 part.) In wet places in Colo, and Wyo. Alt. 6000-9000 ft. Meadow 

 Height ; Elk River, Routt Co. ; Grizzly Creek. 



19. Juncus Mertensianus Bong. In wet mountain meadows from Mont, to 

 Alaska, Colo, and Calif. Alt. 8500-11,000 ft. Pagosa Peak; North Park; 

 Marshall Pass; Breckenridge ; Georgetown; Ironton; Red Mountain, Ouray; 

 Buffalo Pass ; Park Range. 



A form with 2 or 3 heads was collected on the Upper La Plata River. This 

 has been taken for the var. paniculatus Engelm., to which it scarcely belongs. 



20. Juncus brunnescens Rydb. (/. xiphioides montanus Engelm., in part.) 

 In wet meadows from Colo, to Nev., N. M. and Ariz. -Pagosa Spring. 



21. Juncus parous Rydb. In wet mountain meadows from Colo, to N. M. 

 Garland ; North Cheyenne Canon ; Steamboat Springs ; Pike's Peak. 



22. Juncus saximontanus A. Nelson. (/. xiphioides montanus Engelm., 

 mainly.) In wet meadows from Alb. to B. C., Colo, and Calif. Alt. 8500- 

 10,000 ft. La Plata River; Garland; Pagosa Springs; Sangre de Cristo 

 Creek; Carlton Lake, near Grand Lake; Ouray; Redcliffe; Rogers; Mount 

 Harvard; Steamboat Springs; Ironton Park, Ouray; foot of Mount Richto- 

 fen, on the Michigan; Steamboat Springs; Graymont; Gypsum Creek Canon; 

 Hebron, North Park. 



2. JUNCOIDES Adans. WOOD-RUSH. 



Flowers on slender pedicels in a corymbiform inflorescence. i. /. parviflorum. 

 Flowers subsessile in headlike or spikelike clusters. 

 Spikelets peduncled, forming a corymb. 



Flowers light-yellow. 2. J. comosum. 



Flowers brown or feruginous. .3. /. intermedium. 



Spikelets subsessile, forming a compound spike. 



Plant tall, 4-5 dm. high ; inflorescence subcapitate ; stem-leaves broad and 

 flat ; bractlets not ciliate. 4. /. subcapitatum. 



Plant 1-2, rarely 3-4 dm. high ; spike usually elongated and nodding ; stem- 

 leaves narrow, attenuate ; bractlets ciliate. 5. /. spicatum. 



i. Juncoides parviflorum (Ehrh.) Coville. (Luzula spadicca parvinora 

 and v. mclanocarpa Meyer.) In wet meadows from Greenl. to Alaska, Colo, 

 and Calif. Alt. 8500-11,500 ft. Beaver Creek; White River Plateau; Silver 

 Plume ; Crystal Park ; Villa Grove ; Cameron Pass ; Mt. Robinson ; Seven 

 Lakes, Pike's Peak ; Pagosa Peak ; Caribou ; Bald Mountain ; Salida ; head- 

 waters of Sangre de Cristo Creek; Little Kate Mine, La Plata Mountains. 



