54 CHENOPODIACILE. Atriplex. 



13. A. expansa, "Watson. Resembling the last, but always erect and with more 

 widely spreading virgate branches : leaves triangular and somewhat hastate, abruptly 

 acute, sessile or nearly so : staminate spikes usually slender and interrupted, naked 

 above : fruiting bracts more compressed, the sides often uriappendaged and strongly 

 reticulated. Rev. Chenop. 116. 



Santa Barbara County (Torrcy) ; dry river-bed near San Diego (Palmer); and eastward to 

 S. Colorado and New Mexico. 



* * * Perennials, mostly dioecious and woody, densely scurfy : leaves alternate : 

 radicle mostly superior or ascending. 



Fruiting bracts with a toothed margin and the sides muricate : leaves entire. 



14. A. polycarpa, Watson. Erect, shrubby at base, 2 or 3 feet high, diffusely 

 much branched ; branches terete, slender, rigid and leafy : leaves thick, obovate to 

 spatulate, 1 to 5 lines long, mostly very small and fascicled, obtuse, sessile : flowers 

 in close panicled naked spikes: fruiting bracts somewhat orbicular, 1 to 1| lines 

 long, often much broader, white-scurfy and somewhat spongy, the broad margin 

 irregularly and sharply toothed, and the sides with two or more conspicuous toothed 

 crests: seed half a line broad. Rev. Chenop. 117. Obione polycarpa, Torrey, 

 Pacif. R. Rep. iv. 130. 



San Felipe Canon (Palmer) ; near Fort Mohave (Cooper), and eastward on Williams River and 

 in the valley of the Gila, Emory, Biyclow. 



A. PALMERI, Watson (Proc. Am. Acad. xi. 145). Stout and shrubby at base : leaves obovate 

 or oblanceolate, rounded or acutish above, attenuate to a short petiole, ^ to H inches long : fruit- 

 ing bracts cuneate-orbicular, compressed, not united, 1J lines broad, margined above the middle 

 and irregularly gash-toothed, rarely somewhat muricate. Guadalupe Island, Pa/iner. 



A. NUTTALLII, Watson (Hev. Chenop. 116. A. cancsccns, Nutt.). Erect, branching from the 

 shrubby base : leaves oblong-spatulate to narrowly oblanceolate, ^ to 2 inches long, obtuse or 

 acutish, narrowed to a short petiole or sessile : bracts ovate, strongly convex, united, 1^ to 2 lines 

 long, acute or acuminate, usually more or less margined and toothed, and the sides more or less 

 crested. Very frequent from Northeastern Nevada to Colorado and the Saskatchewan. 



-t- *- Fruiting bracts small, orbicular or ovate, membranous or spongy, not mar- 

 gined or muricate : leaves entire. 



H- Monoecious, procumbent and mostly herbaceous : leaves lanceolate, small, the 



lower opposite, sessile. 



15. A. Californica, Moquin. Much branched from the base, the slender leafy 

 stems a foot long or less, densely mealy : leaves ovate- to linear-lanceolate, 3 to 

 8 lines long, acute at each end : flower-clusters all axillary, the upper ones more 

 staminate : '"calyx deeply 4-cleft : fruiting bracts rhombic-ovate, membranous, dis- 

 tinct, 1 i- lines long, somewhat convex : styles included : seed half a line broad : 

 radicle inferior. DC. Prodr. xiii 2 . 98 ; Watson, 1. c. 110. 



Near the coast, from San Francisco Bay to San Diego. 



H- -H- Dioecious, erect and shrubby: leaves ovate to rhombic or triangular-has- 

 tate, petioled, alternate : flowers in naked axillary and terminal panicled 

 spikes. 



1C. A. lentiformis, Watson. Diffusely branched, 2 to 12 feet high, the branches 

 terete with divaricate rigid occasionally somewhat spinescent branchlets, closely 

 scurfy : leaves ovate- to oblong-rhombic or somewhat hastate, cuneate at base, | to 

 1 inches long : flower-clusters small : calyx 5-parted : fruiting bracts orbicular, 1 or 

 2" lines broad, strongly compressed, united to above the middle, the free margins 

 obscurely crenate : seed dark, line broad. Rev. Chenop. 118. Obione lenti- 

 formis, Torrey, Sitgreaves Rep. 169, t. 14. 



In the desert region from Pose Creek (Heermann) to the southern boundary (Palmer), and east- 

 ward through Arizona. 



