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 Caiion. 



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 Wye. — Alt. 6000-9000 ft.;— Meadow 

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



ig. 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; Redclifle; 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. J. parviAorum. 

 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. J. subcapitatum. 

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

 leaves narrow, attenuate ; bractlets ciliate. 5. 7. spicatum. 



i. Juncoides parviflorum (Ehrh.) Coville. {Luzula spadicea parvMora 

 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. 



