310 CHENOPODIACE^. (GOOSEFOOT FAMILY.) 



4- ■*- Bracts small, ovate-oblong, truncate, usually few-toothed. 



3. A. saccaria, Watson. Low (3 to 5 inches high), diffusely branched, 

 densely scurfy : leaves subcor date-ovate, very shortly petioled or sessile : flowers 

 axillary : bracts pedicelled and often deflexed, the truncate summit entire or 

 suberose. — Loc. cit. 112. S. Wyoming (Dr. Graij). 



4. A. Wolfii, Watson. " Low, branching, scurfy-canescent and reddish : 

 leaves linear, sessile : flowers very small, in androgynous axillary clusters : 

 bracts sessile, 3-toothed. — Loc. cit. Central Colorado ( Wolf). 



-*-■*- H- Bracts orbicular, tooth-crested, - with an acuminate foliaceous apex. 



5. A. Powellii, Watson. Erect, slender, grayish : leaves lanceolate, 

 entire or subdenticulate: flowers androgynous, axillary: bracts with a broad 

 terminal entire lobe, the margin below it gash-toothed, the sides doubly or 

 triply tooth-crested. — Loc. cit. S. W. Colorado and Arizona. 



4- 4- 4- •«- Bracts rhombic- orbicular, indurated, usuallfi conspicuously appendaged 

 and the foliaceous margin toothed and undulate: leaves triangular and subhas- 

 tate, the lower opposite. 



6. A. argentea, Nutt. Diffusely branched and leafy, grayish scurfy or 

 nearly glabrous: leaves petioled: male spikes short and dense: bracts shortly- 

 pedicelled. — Obione argentea. From Colorado to the Upper Missouri and N. 

 E. California. 



7. A. expansa, Watson. Like the last, but stouter, 7nore divaricately 

 and distantly branched^ with thinner leaves, sessile, and the male spikes elongated, 

 slender and leafless toward the apex. — Loc. cit. 116. S. Colorado and New 

 Mexico to S. California. 



* * * Perennials, shrubby, densely appressed-sc.urfy. 

 •<- Bracts with a toothed margin and the sides muricate. 



8. A. Nuttallii, Watson. Branching from the shrubby base: leaA^es 

 oblong-spatulate to narrowly oblauceolate, entire : bracts ovate, strongly con- 

 vex, united, the sides more or less crested. — Loc. cit. 116. A, canescens, 

 Nutt. Obione canescens, Moq. From Colorado to N. Nevada and the Sas- 

 katchewan. 



■*- -^ Bracts with free dilated entire margins, thick and scurfy, arid the sides not 



muricate. 



9. A. COnfertifolia, Watson. Diffusely-branched, somewhat spinescent : 

 leaves ovate to obovate, cuneate at base, entire : flower clusters small, axillary : 

 bracts cuneate-orb'*cular, united at base. — Loc. cit. 119. Obione confrtifolia, 

 Torr. From S. Idaho and Wyoming to New Mexico and southward. 



•t- -(- 4- Bracts connate and indurated, not scurfy or muricate, with 4 distinct 

 broadly dilated wings. 



10. A. canescens, James. Leaves oblanceolate to narrowly oblong oi 

 linear, entire : flowers mostly dioecious, in panicled spikes : the bracts form- 

 ing a thick and indurated body, shortly pedicellate and with a narrow bifid 

 apex, the broad wings somewhat decurrent upon ths pedicel. — Watson, loc. 

 cit. 120. From N. Nevada to Colorado, New Mexico, and S. California. 



