GOOSEFOOT FAMILY. 



4. Atriplex argentea Xmt. 



A triplex argentea Nutt. Gen. i: 198. 1818. 



Annual, pale, densely silvery-scurfy or becom- 

 ing smooth, stem erect or ascending, bushy- 

 branched, 6'-2o' high, angular. Leaves firm, tri- 

 angular-hastate or rhombic-ovate, mostly acute at 

 the apex, narrowed or subtruncate at the base, 

 petioled or the upper sessile, entire or sparingly 

 dentate, ^'-2'long, the basal lobes short; flowers 

 in capitate axillary clusters, or the staminate in 

 short dense spikes; fruiting bractlets suborbicu- 

 lar, rhombic or broader than high, -2"-$" wide, 

 united nearly to their summits, the margins 

 sharply toothed, the sides sometimes tubercled 

 or crested; radicle of the embryo pointing down- 

 ward. 



In dry or saline soil, Minnesota to the Northwest 

 Territory, south to Nebraska, Colorado and Utah. 

 June-Sept. 



Silvery Orache. (Fig. 1381.; 



579 



5. Atriplex expansa S. Wats. Sessile- 

 leaved Orache. (Fig. 1382.) 



Atriplex expansa S. Wats. Proc. Am. Acad. 9: 116. 



1874. 



Annual, densely silvery-scurfy, similar to the 

 preceding species, but stouter, the stem erect, 

 widely branched, sometimes 6 tall. Leaves thin, 

 triangular-hastate or rhombic- ovate, toothed or 

 entire, sessile or the lower very short- petioled, 

 W-iW long and nearly as wide at the base; 

 pistillate flowers in axillary clusters, the stami- 

 nate mostly in slender interrupted solitary or 

 paniclcd spikes sometimes 4' long; fruiting 

 bractlets broad, united nearly to their summits, 

 tubercled, their margins strongly toothed. 



Western Kansas (according to A. S. Hitchcock) to 

 Chihuahua and New Mexico, west to California. 

 July-Oct. 



6. Atriplex arenaria Nutt. Sea-beach 

 Atriplex. (Fig. 1383.) 



Atriplex arenaria Nutt. Gen. i: 198. 1818. 



Annual, pale, densely silvery-scurfy, stem 

 bushy-branched, 6 / -i8 / high, the branches as- 

 cending or decumbent, angular, slender. Leaves 

 oblong, entire, acute or obtuse and mucronulate 

 at the apex, narrowed or rounded at the base, very 

 short-petioled or sessile, ^'-i^'long, 2%."-\o" 

 wide, the midvein rather prominent, the lateral 

 veins few and obscure; flowers in axillary clus- 

 ters much shorter than the leaves; fruiting bract- 

 lets triangular wedge-shaped, broadest above, 

 2//_y/ wide, united nearly to the several-toothed 

 summits, their margins entire, their sides reticu- 

 lated, or sometimes crested or tubercled; radicle 

 of the embryo pointing downward. 



On sandy sea beaches, Nova Scotia (?); Massa- 

 chusetts to Florida. July-Sept. 



