116 CHENOPODIACEAE. 



15. Chenopodium Botrys L. In waste places from N. S. to B. C, Ga. and 

 Calif.; also Mex. — Alt. 4000-8000 ft. — Plains and foot-hills near Boulder; 

 Ouray; Idaho Springs; Box Canon, west of Ouray; Clear Creek Canon, 

 above Golden. 



16. Chenopodium cornutum B. & H. In dry places from Colo, to N. M. and 

 Ariz. ; also in Mex. — Alt. 4000-8000 ft. — Huerfano Co. ; Buena Vista ; Little 

 Veta Mountain. 



2. BLITTJM L. Strawbeery Blite. 



Leaves more or less dentate, truncate or broadly cuneate at the base ; inflorescence 

 dense and leafy. 1. B. capitatum. 



Leaves entire, except the hastate teeth at the cuneate base; inflorescence slender 

 and naked above. 2. B. hastatum. 



1. Blitum capitatum L. In rocky soil from N. S. to Alaska, N. J. and 

 Calif.— Alt. 6000-10,000 ft. — Mountains between Sunshine and Ward, Boulder 

 Co.; Hamor's Lake, above Durango; Georgetown; Sangre de Cristo Creek; 

 North Park; Gunnison; Veta Pass; La Veta; Minnehaha; Ouray; Brecken- 

 ridge; Anchor; Poudre Caiion; Elizabethtown ; Chambers' Lake; Buena 

 Vista; forks of Poudre and Big-tooth. 



2. Blitum hastatum Rydb. In stony ground from Wyo. to Utah and Colo. 

 — Alt. 6000-9500 ft. — Big Creek Gulch, Routt Co. ; Trapper's Lake. 



3. CYCLOLOMA Moq. 



I. Cycloloma atriplicifolium (Spreng.) Coult. (C. platyphyllum Moq.) 

 In sandy soils from Ont. to Mont., Ark. and Ariz. — Alt. 4000-6000 ft. — La 

 Salle; Denver; New Ayindsor, Weld Co.; near Boulder; Elk Caiion. 



4. MONOLEPIS Schrad. 



Leaves lanceolate, hastately lobed, flower clusters several flowered ; pericarp some- 

 what fleshy. I. M. Nuttalliana. 

 Leaves spatulate, entire ; flower-clusters 1-3-flowered ; pericarp thin. 



i. M. pusilla. 



1. Monolepis Nuttalliana (R. & S.) Engelm. {M. chenopodioides Moq.) 

 In alkaline soil from Minn, to Wash., Tex. and Calif. — Alt. 4000-9000 ft. — 

 Near Bents' Fort; valley near Empire; Sangre de Cristo Creek; headwaters 

 of Pass Creek; Arboles; Durango; vicinity of Fort Collins; Gunnison; New 

 Windsor, Weld Co. ; Buena Vista ; Montrose ; Platte River Valley ; Grand 

 Junction; Fort Collins. 



2. Monolepis pusilla Torr. In alkaline soil from Wyo. and Colo, to Calif. — 

 Grand Junction. 



5. ATRIPLEX L. Orache. 



Annuals. 



Bracts united only at the base ; radicle inferior. 



Bracts thin, broadly ovate, mucronate. 17. A. hortensis. 



Bracts thick, deltoid or lanceolate, acute. 



Stem tall, erect ; leaves broadly ovate or triangular-hastate. 



I. A. carnosa. 

 Stem low, 2-4 dm. high, spreading or ascending ; leaf-blades lanceolate, 

 hastately lobed. is. A. subspicata. 



