Part 1, 1916] CHENOPODIACEAE 19 
obovate, completely enclosing the fruit; stigmas short; pericarp free ; seed horizontal, 1 mm. 
broad, smooth or slightly rugulose, black, shining, the margin obtuse. 
TYPE Locatity: On the North Platte River [Wyoming]. 
DISTRIBUTION: North Dakota to western Texas, northern Mexico, Nevada, and British Columbia. 
I_LustRations: Britt. & Brown, Ill. Fl. f. 1364; ed. 2. f. 1684. 
22. Chenopodium neomexicanum Standley, sp. nov. 
Ill-scented erect annual, 6-7 dm. high, simple below, sparsely branched above, the branches 
slender, strongly ascending, sparsely and very finely farinose, nearly terete, often tinged with 
red; petioles slender, equaling or only half as long as the blades; leaf-blades deltoid to orbicular- 
ovate or rhombic-ovate, 1.5-2.8 cm. long, rounded at the apex and scarcely apiculate, trun- 
cate or rounded at the base, subhastate, with low, rounded or acutish lobes, very thin, green and 
glabrate on the upper surface, sparsely and very finely farinose beneath, the upper blades 
smaller, often ovate to oblong, entire, acute; flowers in rather large glomerules, these in dense, 
stout, narrowly paniculate spikes, the inflorescence nearly naked; calyx rather sparsely farinose, 
cleft to the middle or lower, the lobes rounded-obovate, green, slightly carinate, completely 
enclosing the fruit; pericarp adherent; seed horizontal, 1.3-1.5 mm. broad, nearly black, 
shining, puncticulate, the margin obtuse. 
Type collected along Mineral Creek, Sierra County, New Mexico, altitude 2250 meters, Sep- 
tember 26, 1904, 0. B. Metcalfe 1413 (U.S. Nat. Herb. no. 498188). 
DistRrBuTIon: Mountains of southwestern New Mexico and southeastern Arizona. 
23. Chenopodium flabellifolium Standley, sp. nov. 
Plants very slender, 3 dm. high, much branched from the base, the branches ascending, 
terete, stramineous, finely and rather sparsely farinose; petioles very slender, equaling or 
usually longer than the blades, sometimes twice as long; leaf-blades flabelliform to very broadly 
rhombic, 4-10 mm. long, 4-12 mm. broad, commonly broader than long, broadly cuneate to 
truncate at the base, broadly rounded at the apex, mucronulate, entire or very obscurely 3- 
lobed, the lateral lobes entire or with 2 broad obtuse teeth, the terminal lobe entire or rarely 
obscurely and remotely dentate, densely and finely puberulent on both surfaces when young, 
becoming glabrate in age, the uppermost blades smaller and narrower, sometimes acute; 
flowers in very small glomerules, these in slender, interrupted, simple or narrowly paniculate 
spikes, the inflorescence nearly naked; calyx deeply 5-cleft, loosely farinose, the lobes broad, 
rounded at the apex, obscurely carinate, enclosing the fruit; pericarp adherent; seed horizontal, 
1 mm. broad, black, lustrous, smooth, the margin acutish. 
Type collected on San Martin Island, Lower California, March 12, 1897, T. S. Brandegee 
(Herb. Univ. Calif. no. 116454). 
24. Chenopodium Palmeri Standley, sp. nov. 
Ul-scented erect annual, 6-8 dm. high, much branched above, the branches strongly 
ascending, slender, obtusely angled, pale-greenish, copiously but very finely farinose; petioles 
slender, equaling or two thirds as long as the blades; leaf-blades broadly rhombic-ovate, 
1.5-2.5 em. long, rounded or broadly obtuse at the apex, apiculate, rounded or broadly cuneate 
at the base, entire, or usually with 2 small rounded lobes at the base, very thin, green and 
glabrate on the upper surface, densely but very finely and closely farinose beneath, the upper 
blades smaller, entire, obtuse; flowers in small glomerules, these in slender, dense or inter- 
rupted, paniculate spikes, the inflorescence ample, open, with slender, nearly naked branches; 
calyx densely farinose, deeply cleft, the lobes oval or broadly oblong, incompletely enclosing 
the fruit; pericarp adherent; seed horizontal, 0.7-0.8 mm. broad, dark reddish-brown, shining, 
nearly smooth, the margin obtuse. 
Type collected at Hacienda San Miguel, southwestern Chihuahua, Mexico, in 1885, Edward 
Palmer 9 (U.S. Nat. Herb. no. 48302). 
25. Chenopodium arizonicum Standley, sp. nov. 
Iil-scented erect annual, 3-6 dm. high, simple at the base, branched above, the branches 
usually slender, obtusely angled, ascending, sometimes from a spreading base, very sparsely 
