Chenopodiaceae 141 
FF. Flowers perfect; perianth of 1—5 segments or lobes; leaves various. 
G. Leaves wider than linear. CHENOPODIUM (p. 141) 
GG. Leaves linear. 
H. Leaves flat, not fleshy, not spine-like. 
I. Stem not hairy, glabrous or slightly mealy; leaves mealy beneath; 
flowers clustered or panicled, with 2—5-toothed or -parted peri- 
anth. CHENOPODIUM (p. 141) 
II. Stem more or less villous-pubescent, not mealy; leaves not mealy; 
flowers solitary in the axils of the reduced upper leaves, naked 
or with | perianth-segment. CORISPERMUM (p. 144) 
HH. Leaves somewhat terete or angular, sometimes fleshy or spine-like. 
J. Leaves rigid and prickly-pointed making the plant prickly to the 
touch; tumble-weed. SALSOLA (p. 145) 
JJ. Leaves not prickle-like; plant not prickly to the touch, not a 
tumble-weed. 
K. Stem glabrous or somewhat pubescent; perianth not hairy; 
styles 2—4. SUAEDA (p. 145) 
KK. Stem more or less villous-tomentose; perianth densely white- 
tomentose; style |. KocHIiA (p. 144) 
DD. Shrubs; leaves entire; flowers unisexual; fertile flowers without perianth. 
L. Plant densely white-tomentose with stellate hairs, not spinescent; bracts 
of fruit with 4 tufts of long hairs; pericarp hairy. EUROTIA (p. 144) 
LL. Plant not hairy as above, spinescent (except Alriplex nuttallii) ; pericarp 
glabrous. 
M. Leaves linear, quite fleshy, somewhat terete; perianth present in pistillate 
flowers but not in staminate. SARCOBATUS (p. 144) 
MM. Leaves wider than linear, not or only slightly fleshy, flat, not terete; 
perianth present in staminate flowers but not in pistillate. 
N. Leaves 12—31 mm. long; plant spiny; bracts obcompressed, in fruit 
united into a sac; perianth-segments of staminate flowers 4. 
GrayIiA (p. 143) 
NN. Either leaves only 4—17 mm. long or plant not spiny; bracts com- 
pressed, in fruit united but not to the top; perianth-segments of staminate 
flowers 5. ATRIPLEX (p. 143) 
AA. Leaves almost none or mere scales, opposite; branches opposite; stems conspicu- 
ously jointed, very fleshy. SALICORNIA (p. 144) 
NITROPHILA 
Herbs, perennial, low, branching. Leaves opposite, fleshy. Flowers perfect, small, 
axillary, mostly 2-bracted. Perianth segments 5——7, distinct, erect keeled. Stamens as 
many as the perianth-segments, united into a very narrow perigynous disk. Style short; 
stigmas 2.. Utricle subglobose, indehiscent, beaked by the persistent style, included within 
the connate perianth-segments. In moist alkaline soil. (Gk. nitron—native soda, philos= 
loving; referring to the alkali habitat.)  E. 
N. occidentalis Wats. 
CHENOPODIUM GOOSE-FOOT 
Herbs, annual or perennial, glabrous or white-mealy or glandular-pubescent. Leaves 
alternate, entire or sinuate-toothed or pinnately lobed, petioled. Flowers in spikes or 
heads and these composed of glomerules or solitary flowers, perfect, small, green, sessile, 
bractless. Perianth 2—5-parted or -lobed, embracing or enclosing the utricle; segments 
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