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. 



1 6. 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. 



1 8. 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. (7. 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. /. 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 spadicea parvifiora 

 and v. melanocarpa 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. 



