592 CHENOPODIACE 2% KOCHIA 
CHENOPODIUM 
Ovary ovoid, narrowed upward into the style: stigmas 2. Utricle 
pear-shaped or oblong the pericarp membranaceous, not adherent 
to. the inverted seed. Embryo annular, green, enclosing the 
scanty albumem. 
K. Americana Watson Proc. Am. Acad. ix, 93. Woody and branch- 
ing at base: stems erect, mostly simple and virgate, 6-18 inches high, 
leafy, villous-tomentose to nearly glabrous: leaves terete, linear 3-12 lines 
long, acutish, ascending: flowers 1-3 in the axils, mostly with abortive 
stamens: calyx densely white- -tomentose, nearly a line broad in fruit, the 
membranous wing as wide or wider, its lobes cuneate, rounded, nerved and 
somewhat crenulate: ovary ovate tomentose above: style elongated: peri- 
carp nearly smooth: seed 7% of a line broad, Valleys and foothills, eastern 
Oregon to Nevada and Arizona. 
3 CHENOPODIUM L. Sp 218. 
Annual or perennial herbs with alternate flat leaves and very 
small perfect sessile, bractless flowers clustered in axillary and 
terminal often panicled or compound spikes. Calyx 2-5-parted 
or 2--5-lobed, more or less closely covering the fruit, its segments 
or lobes herbaceous or somewhat fleshy, often keeled or rigid. 
Stamens 1-5. Styles 2-4, slender. Pericarp membranaceous, 
closely investing the lenticular or globose seed. Testa crustace- 
ous. Embryo annular or curved around copious albumen. 
§ 1 CHENopoprastRUM Mog. in DC. Prodr. xiii, 61. Annu- 
als, usually somewhat mealy but not pubescent. or glandular nor 
aromatic. Fruit dry. Seeds lenticular, horizontal. Embryo 
completely annular. 
C. atsom L, Sp. 219. (Lamp’s Quarters.) More or less mealy 
t hroughout: stem usually slender erect, commonly much branched usually 
1-4 feet high: leaves rhombic-ovate or the upper ones lanceolate to linear- 
lanceolate, 1-4 inches long, obtuse or acute, at least the lower ones sinuate- 
dentate, the upper usually entire: flowers densely clustered in simple or com- 
pound often panicled spikes: calyx about half a line broad in fruit, its segments 
strongly heeled, usually completely enclosing the utricle: seed firm! y attached 
tothe pericarp. Common in cultivated fields and waste places everywhere. 
C. hybridum L. Sp. 519. Glabrous throughout, or the inflorescence 
more or less mealy: stem rather stout erect, 2-4 feet high, simple or sparing- 
ly branched above: leaves ovate or rhombic- ovate, long-acuminate at the 
apex, truncate, rounded or subcordate at base, sharply dentate with 1-4 large 
acute teeth on each side, or the upper lanceolate and entire, the lower ones 4— 
“7 inches long: flowers in large axillary and terminal panicles: calyx about a 
line broad its segments oblong, slightly keeled incompletely covering the 
fruit; stamens 5: seed sharp-edged, firmly attached to the pericarp. In 
woods and thickets, Brit. Columbia to Oregon and the Atlantic States, also 
urope. 
C. muRALE L. Sp. 219. Scarcely or not at all mealy, somewhat scuriy 
above: stems erect or decumbent, usually branched 1-3 feet high: leaves 
rhombic-ovate bright green on both sides, acute or acuminate atthe apex, 
sharply and coarsely sinuate dentate, broadly cuneate or subtruncate at base, 
2-4 inches long: flowers in loose axillary panicles shorter than the leaves? seg- 
ments of the ealyx not entirely enclosing the utricle: seeds sharp-edged, firmly 
attached to the pericarp. Along the coast. Brit. Columbia to California 
