70 NORTH AMERICAN FLORA [VoLuME 21 
to linear, green, entire, the sides of the bracts bearing numerous or few long linear appendages, 
or without appendages; seed 1.5 mm. long, the radicle superior. 
TYPE LOCALITY: Between the Truckee and Humboldt rivers, western Nevada. 
Disrripution: Sandy soil, western Utah to western Nevada. 
XXVIII. Confertifoliae. Low, densely furfuraceous shrubs with spinose branches. 
Leaves alternate, short-petiolate, the blades broad, entire, thick. Flowers dioecious. Fruit- 
ing bracts large, united at the base, mostly oval, entire or remotely dentate, usually sessile, 
the sides smooth. Radicle superior. 
97. Atriplex confertifolia (Torr.) S. Wats. Proc. Am. Acad. 
9: 119. 1874. 
Obione confertifolia Torr. in Frém. Rep. Calif, 318. 1845. 
Obione spinosa Moq. in DC. Prodr, 13?: 108. 1849. 
Atriplex spinosa D. Dietr. Syn. Pl. 5: 536. 1852. 
Erect shrub, 3-12 dm. high, much branched, often forming broad rounded clumps, the 
branches stout, erect or ascending, dark-gray, the branchlets usually divaricate, stout or slender, 
sharply spinose, densely furfuraceous, often becoming glabrate; leaves alternate, the petioles 
4 mm. long or less, or the leaves subsessile, the blades ovate to oval or suborbicular, 1-2 cm. 
long, rounded to acutish at the apex, cuneate to rounded at the base, thick, densely furfu- 
raceous; flowers dioecious, in small dense axillary glomerules; calyx 5-cleft; fruiting bracts 6-12 
mm, long, suborbicular to broadly oval, entire, united at the base, usually broadest near the 
base, short-stipitate or sessile, densely furfuraceous; seed 1.5—-2 mm. broad, reddish-brown. 
Type Locatity: Shores of Great Salt Lake, Utah. 
Distrmeution: Dry plains and hillsides, North Dakota to Chihuahua, California, and eastern 
Oregon. 
ILLUSTRATIONS: Jepson, Fi. Calif. f. 83; Bull. U. S. Dep. Agr. Bot. 27: #1. 4, f. 2; Clements, 
Rocky Mt. Fl. pl. 10, f. 4. 
98. Atriplex collina Wooton & Standley, Contr. U.S. Nat. Herb. 16: 
119. 1913. 
Erect shrub, 2-3 dm. high, much branched, forming broad rounded clumps, the branches 
stout, ascending or spreading, the older ones dark-gray, the branchlets spinose, densely fur- 
furaceous; leaves subsessile, the blades oval-oblong to obovate or rarely suborbicular, 0.8-2.5 
em. long, obtuse or rounded at the apex, rounded to cuneate at the base, thick, densely furfu- 
raceotts; flowers dioecious, the staminate plants not seen; pistillate flowers 1 or more in each axil, 
forming stout, densely leafy spikes; fruiting bracts ovate-orbicular, 5-8 mm. long, sessile, 
acute or acutish, thin, united only at the base, coarsely dentate or denticulate, at least near 
the base, densely furfuraceous; seed 1.5 mm. broad, reddish-brown, the radicle superior. 
Typ# Locality: Dry hills near the north end of the Carrizo Mountains, Arizona. 
DistripuTion: Dry hillsides, southwestern Colorado, southeastern Utah, northwestern New 
Mexico, and northeastern Arizona. 
X XIX. Canescentes. Tall or rarely low shrubs, usually densely furfuraceous. Leaves 
alternate, sessile or nearly so, the blades ustially narrow, entire. Flowers dioecious. Fruiting 
bracts large, sessile or pedicellate, united nearly to the apex, the sides broadly 4-winged, the 
wings entire or dentate or laciniate. Radicle superior. 
99. Atriplex Garretti Rydb. Bull. Torrey Club 39: 312. 1912. 
Shrub, 3 dm. high, much branched, the branches erect or ascending, terete, stramineous, 
furfuraceous; leaves alternate, short-petiolate, the blades oval to orbicular-obovate, 1.2-3.5 
em. long, broadly rounded to acute at the apex, often apiculate, acute at the base, entire, 
densely furfuraceous; flowers dioecious, in axillary and terminal clusters, the staminate glom- 
erules small, fuscous, in axillary or terminal, simple or narrowly paniculate spikes, the pistil- 
late in broad, crowded or interrupted spikes; fruiting bracts 6-12 mm. long and of about the 
same breadth, 4-winged on the back, the wings coarsely and irregularly dentate, with a broad 
open sinus at the apex, the free portion 1-2 mm. long, usually exceeding the wings; radicle 
superior. 
Type Locarry: Vicinity of Moab, Utah. 
DISTRIBUTION: Western Colorado and eastern Utah. 
