ParT 1, 1916] CHENOPODIACEAE 7 
reddish in age; sepal spatulate to obovate, acute or acutish; pericarp minutely pitted; seed 
1 mm. in diameter, dark-brown or black, the margin acute. 
TYPE Locality: On arid soils near the banks of the Missouri [River]. 
_ Distrisution: In alkaline or dry soil, Manitoba to Alberta, California, Sonora, Texas, and 
Missouri; on ballast in Maine; Siberia; Patagonia. - 
Invusrrations: Britt. & Brown, Ill. Fl. f. 1377; ed. 2. f. 1696; E. & P. Nat. Pfl. 3: f. 28, A. 
2. Monolepis spathulata A. Gray, Proc. Am. Acad. 7: 389. 1868. 
Plants much branched from the base, the branches decumbent or ascending, 3-15 cm. long, 
glabrous, or the younger parts slightly farinose; leaf-blades narrowly spatulate, or the lower 
ones obovate, 5-15 mm. long, 1.5-5 mm. wide, rounded to acute at the apex, narrowed at the 
base into a short petiole, entire; flower-clusters sessile, 10-20-flowered; sepal spatulate, obtuse; 
pericarp minutely papillose, free from the seed; seed about 0.4 mm. in diameter, brown, shining. 
TYPE LOCALITY: Sierra Nevada, at Mono Pass, California. 
DISTRIBUTION: Oregon and Idaho to northern Lower California. 
3. Monolepis pusilla Torr.; S. Wats. Bot. King’s Expl. 289. 1871. 
Plants 4-20 em. high, farinose when young but becoming glabrate, erect, dichotomously 
much branched, the branches very slender, spreading: leaves short-petiolate, the blades entire, 
4-12 mm. long, oblong to oblong-elliptic, obtuse, acute at the base; flower-clusters sessile, 
2-5-flowered, or the flowers often solitary; sepal obtuse; pericarp minutely tuberculate, ad- 
herent to the seed; seed 0.5 mm. in diameter, dull, the margin obtuse or acutish. 
Tyree Locairy: Alkaline valleys of western Nevada, at 1200-1500 meters elevation. 
DistRisuTion: In alkaline soil, Wyoming and Colorado to Washington and California. 
5. MEIOMERIA Standley, gen. nov. 
Sparsely glandular-pubescent, branched, annual herbs. Leaves alternate, sessile, the blades 
linear, entire. Flowers perfect, ebracteate, glomerate, the glomerules sessile or short-pedun- 
culate in the axils of the leaves, solitary or fasciculate; perianth 6—8-parted, the segments 
scarcely concave, linear, acute, in age developing a vertical crest, this much higher than the 
breadth of the sepals, broadest near the apex or at the middle, usually denticulate in age. 
Stamen 1, hypogynous, the filament linear, exceeding the perianth; anther oblong. Ovary 
ovoid; style nearly obsolete; stigmas 2, filiform, elongate. Utricle enclosed by the perianth, 
puberulent, adherent, membranaceous. Seed erect, minute, subglobose; embryo incom- 
pletely annular, surrounding the copious endosperm. 
Type species, Chenopodium stellatum S. Wats. 
1. Meiomeria stellata (S. Wats.) Standley. 
Chenopodium stellatum S. Wats. Proc. Am. Acad. 18: 146. 1883. 
Plants 6-10 cm. high, sparsely branched, the branches ascending or suberect, sparsely 
glandular-puberulent or short-villous; leaf-blades 4-18 mm. long, 1-1.5 mm. wide, rounded at 
the apex, narrowed at the base, glandular-puberulent; glomerules present in nearly all the axils, 
few-flowered, much shorter than the leaves; perianth 1 mmwide, the lobes acuminate or 
attenuate, closed in fruit; seed 0.3-0.4 mm. in diameter, reddish-brown, dull. 
Tyre Locality: In the mountains northeast of Monclova, Coahuila. 
DistRwvtion: Known only from the type locality. 
6. CYCLOLOMA Mog. Chenop. Enum. 17. 1840. 
Cyclolepis Mog. Ann. Sci. Nat. II. 1: 203. 1834. Not Cyclolepis Gillies, 1832. 
Petermannia Reichenb. Nom. Ind. 153. 1841. . 
Amorea Delile, Cat. Hort. Monsp. 1844.—Mog. in DC. Prodr. 13?: 60, as synonym. 1849. 
Amoreuxia Mogq. in DC. Prodr. 13?: 60, as synonym. 1849. Not Amoreuxia Moc. & Sessé, 1825. 
Erect or spreading, much branched, annual herbs. Leaves alternate, petiolate. Flowers 
small, polygamo-monoecious, bracteate, sessile, solitary or glomerate. Perianth 5-lobed, 
the lobes triangular-ovate, obtuse, inflexed, carinate, the tube hemispheric, developing in 
age a broad dentate membranaceous wing. Stamens 5, hypogynous; filaments subulate; 
anthers oblong. Ovary depressed-globose, tomentulose; stigmas 3, short, free, or united at 
