Parr 1, 1916] CHENOPODIACEAE 65 
numerous, often crowded, alternate, the blades spatulate, obovate, or oblong, usually sessile 
and 2-6 mm. long, but on young branches sometimes short-petiolate and rarely 20 mm. long, 
usually recurved at the base, spreading or ascending, rounded to acutish at the apex, cuneate 
to rounded at the base, entire, thick, densely furfuraceous; flowers dioecious, the small stami- 
nate glomerules in stout, dense or interrupted, simple or paniculate, naked spikes, the pistillate 
flowers in small axillary clusters, forming dense or interrupted, sparsely leafy, often diffusely 
paniculate spikes, the leaves much reduce i; calyx deeply 5-cleft; fruiting bracts sessile, cuneate- 
orbicular, 2-3 mm. broad, usually much broader than long, strongly compressed, free, spongi- 
ous, not herbaceous, deeply laciniate-dentate above the base, the teeth linear, usually with a 
few subulate appendages on the sides near the base, or these sometimes borne above the middle; 
styles short; seed 1 mm. broad, reddish-brown, the radicle superior. 
Typ# LocaLity: Valley of the Gila River, Arizona. 
_Distrisution: Alkaline soil, southern California, Nevada, Arizona, Sonora, and Lower 
California. 
ILLUSTRATIONS: Jepson, FI. Calif. f. 82, f.; Bull. U. S. Dep. Agr. Bot. 27: pl. 7, f. 2. 
XXIII. Acanthocarpae. Erect perennials, fruticose below, densely furfuraceous. Leaves 
alternate, petiolate, the blades broad, usually sinuate-dentate. Flowers dioecious. Fruiting 
bracts long-pedicellate, united nearly to the apex, indurate, deeply laciniate, the sides covered 
with numerous long flattened appendages. MRadicle superior. 
83. Atriplex acanthocarpa (Torr.) S. Wats. Proc. Am. Acad. 9: 117. 
1874. : 
Obione acanthocarpe Torr. Bot. Mex. Bound. Surv. 183. 1859. 
Atriplex cuneaia A. Nelson, Bot. Gaz. 34: 357, in part. 1902. 
Erect perennial, 3-10 dm. high, fruticose at the base or nearly throughout, much branched, 
the branches erect or ascending, stout, terete, densely furfuraceous; leaves alternate, or the 
lowest opposite, the blades broadly obovate to ovate-oval, oblong, or elongate-oblong, often 
subhastate at the base, 1.5-5 cm. long, 0.5-2.5 cm. broad, obtuse or rounded at the apex, 
- cuneate or abruptly cuneate at the base, tapering to a slender winged petiole half as long as 
the blade, or the blades subsessile, usually thick and firm, often undulate or crispate, coarsely 
and irregularly sinuate-dentate or sinuate, or rarely entire, densely white-furfuraceous; flowers 
dioecious, the staminate in large glomerules in stout, usually dense, sparsely leafy, paniculate 
spikes, the pistillate flowers solitary or in small clusters in the axils of the leaves; calyx 5-cleft, 
densely furfuraceous; bracts 7-15 mm. long, on slender or stout pedicels 4-20 mm. long, united 
except at the linear apex, becoming thick and spongious, the margins deeply laciniate, the 
sides bearing numerous long flattened appendages; seed 1.5-2 mm. long, brown, filling the 
cavity, the radicle superior. 
Types Locality: Plains between the Burro Mountains, New Mexico. 
DISTRIBUTION: In alkaline soil, western Texas and southern New Mexico to Chihuahua and 
Nuevo Leén. . 
XXIV. Obovatae. Low perennials, fruticose below, densely furfuraceous. Leaves alter- 
nate or the lowest opposite, petiolate, the blades broad, entire. Flowers dioecious. Fruiting 
bracts sessile or pedicellate, broader than long, compressed, united below, denticulate, the 
sides smooth or tuberculate. Radicle superior. 
84. Atriplex Jonesii Standley. 
pyle Caioea ME arena ere he ot eek: Not A. sabulosa Rouy, 1890. 
Perennial, 2-4 dm. high, forming broad clumps, fruticose at the base‘and much branched, 
the stems erect or decumbent, simple below, branched above, terete, densely furfuraceous; 
leaves numerous, mostly alternate, very shortly petiolate or sessile, the blades broadly oval, 
rounded-obovate, broadly oblong, or suborbicular, entire, 1.5-2.5 cm. long, 0.6-2 cm. wide, 
rounded at the apex, or the uppermost blades acute, cuneate to rounded at the base, thick, 
densely furfuraceous; flowers dioecious, the small yellow staminate glomerules in slender, 
leafy or naked, usually interrupted, simple or paniculate spikes, the pistillate clusters few- 
