Part 1, 1916] CHENOPODIACEAE 55 
compressed, the free margins herbaceous, acutely denticulate, the sides not appendaged, 3- 
nerved; seed 1 mm. long, the radicle superior. 
De aaa at Parras, Coahuila, Mexico, in 1880, Edward Palmer 1156 (U.S. Nat. Herb. 
no. 
DisTRIBUTION: Coahuila and Nuevo Le6én. 
48. Atriplex domingensis Standley. 
Obione crispa Moq. Chenop. Enum. 73. 1840. Not Atriplex crispa D. Dietr. 1852. 
Decumbent annual, suffrutescent at the base, much branched, the branches slender or stout, 
subterete, spreading, furfuraceous; leaves alternate, subsessile, spreading, the blades deltoid or 
deltoid-oblong, 4-6 mm. long, 1-2 mm. wide, acute, denticulate or entire, thick, crispate, white- 
furfuraceous on both surfaces; flowers monoecious, the staminate glomerules in terminal spikes, 
the pistillate in axillary fascicles of 2-4 flowers; fruiting bracts sessile, cuneate, 2 mm. long, 
compressed, subcoriaceous, coarsely and acutely 5-dentate at the apex, the sides not appendaged; 
seed dark-brown, the radicle superior. 
TYPE Locality: Santo Domingo. 
DisTRIsuTION: Bahamas; Santo Domingo. 
49. Atriplex arenaria Nutt. Gen. 1: 198. 1818. 
Obione arenaria Mog. Chenop. Enum. 71. 1840. 
Atriplex cristata arenaria Kuntze, Rev. Gen. 546. 1891. 
Erect, ascending, or procumbent annual, much branched, the branches 1-5 dm. long, 
stout, obtusely angled, furfuraceous when young, glabrate in age; leaves alternate, short- 
petiolate or sessile, the blades oblong, oval, broadly obovate, or narrowly oblong, 1.2-4 cm. 
long, 4-15 mm. wide, rounded to acute at the apex, mucronate, rounded to cuneate at the base, 
entire or undulate, rarely with 1 or 2 teeth, thin, densely whitish-furfuraceous beneath, grayish- 
green and glabrate on the upper surface; flowers monoecious, the staminate glomerules terminal 
or in dense or interrupted, terminal or axillary, naked spikes, the pistillate flowers fascicled 
in the axils; fruiting bracts subsessile, cuneate-orbicular, 3-5 mm. long and usually broader, 
compressed, united to the middle, the apex rounded, 3-5-dentate, the teeth subequal, the sides 
irregularly tuberculate or with 2 lateral dentate crests, rarely not appendaged; seed reddish- 
brown, 2 mm. long, the radicle superior. 
TPE LocaLity: Seacoast of New Jersey. 
DISTRIBUTION: Sandy seashores, Nova Scotia to Texas; Bermuda, Bahamas, and Cuba. 
ILLUSTRATIONS: Britt. & Brown, Ill. Fl. 7. 1383; ed. 2. f. 1700; G. T. Stevens, Il. Guide pl. 36, 
f. 3. 
50. Atriplex texana S. Wats. Proc. Am. Acad. 9: 113. 1874. 
Obione elegans tuberculosa Torr. Bot. Mex. Bound. pat 183. 1859, 
Atriplex tuberculata Coult. Contr. U. S. Nat. Herb. 2: 368. 1894, 
Annual, prostrate or decumbent, much branched, the branches slender, terete, 1-4.5 dm. 
long, sparsely and finely furfuraceous; leaves numerous, alternate, short-petiolate or sessile, the 
blades oblanceolate or narrowly oblong, 0.6—-2.5 cm. long, acute or obtuse at the apex, cuneate 
to attenuate at the base, entire, thin, very closely furfuraceous; flowers monoecious, in few- 
flowered axillary clusters, the staminate glomerules sessile in the uppermost axils; calyx 5-cleft; 
fruiting bracts sessile or subsessile, suborbicular or cuneate-orbicular, 3-4 mm. long, united 
at the base, the margins green, deeply or shallowly dentate, the sides each bearing two deeply 
dentate crests; seed 1.5 mm. long, reddish-brown, the radicle lateral. 
TYPE LOCALITY: Western Texas. 
DISTRIBUTION: Western Texas. 
51. Atriplex Aldamae Griseb. Cat. Pl. Cub. 282. 1866. 
Prostrate or procumbent annual (?), sparsely branched, the branches obtusely angled, 
slender, sparsely and finely furfuraceous; leaves alternate, sessile or subsessile, the blades ob- 
long, 1-3 cm. long, 5-12 mm. wide, rounded or obtuse at the apex, mucronate, cuneate at the 
base, entire, undulate, or with an occasional repand tooth, thin, finely whitish-furfuraceous 
beneath, grayish-green and glabrate on the upper surface; flowers monoecious, the small 
