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1902] ^ ROCKY MOUNTAIN PLANTS 36 1 



Atriplex carnosa, n. sp, — Annual, stout, branched, at length 



widely and diffusely so, sometimes nearly i "^ high : stems 

 green, subglabrous : leaves thick and fleshy, oblong-lanceolate 

 or broader, 3-7 ^"^ long, on petioles less than half as long, mostly 

 entire, the larger ones subhastate or with one or more .large 

 teeth near the base: fruiting spikes numerous, more or less 

 panicled, at first dark green, becoming dark purple at maturity ; 

 the large fleshy clusters closely approximated, producing an 

 almost continuous spike often i ^"^ in diameter: fruiting bracts 

 triangular-ovate, about 5 ^"^ long and broad, usually one or 

 more small teeth on the margins, smooth on the back or with 

 one or two fleshy tubercles: radicle inferior or subascending. 



This is a member of the A, patula group. A, patula does not occur in 

 this region except as an introduction. Dr. Watson (Rev. N. A. Chenopodi- 

 aceae) states that the American form of A. hastata also differs somewhat 

 ^ from the European A, hastata L. It may of course at some time be sepa- 



rated. The other two varieties recognized by Watson are wholly distinct 

 from the species now proposed, leaving only^, lapathifolia Rydb. Mem. X.Y. 

 Bot. Gard. 7:133 with which to compare it. From this it seems to be distinct 

 by its great fleshiness, its large spikes and lax habit, and hastately toothed 

 leaves. 



It occurs only in moist strongly alkali-impregnated soils, and seemingly 

 extends from Nebraska across the middle Rocky mountains into Utah. The 





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Wy 



Wy 



CHExVOPODIUM, 



Two years ago a very anomalous Chenopodium was dis- 

 covered, growing in an alkali lake bed. The soil was moist, but 

 the surface was covered with efflorescent salts. The plants were 

 abundant and uniform in habit. The only known species that 

 the plant suggested was Cglaucum, This led to an examination 

 of C. glaucutn and to further collections. After having seen 

 many authentic specimens of both the introduced eastern form 

 and the indigenous western form of C. glaticum there seems to 

 be the best of reasons for designating this a new form as fol- 

 lows : 



Chenopodium succosum, n. sp. — Stout, erect, 5-8 '^'^ high, 

 freely branched, the branches ascending or suberect, straw- 



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