464 CHENOPODIACEAE 
4. CHENOPODIUM [Tourn.] L. Odorless or heavy-scented non-glandu- 
lar herbs, ours annuals. Leaves alternate: blades a to coarsely toothed, 
often mealy-coated. Sepals hooded. Anther-sacs commonly separate. Ovary 
often depressed.—About 50 species of wide geographic pum ec. — The seeds 
of some species are used by primitive people as a source of flour.—GoosEroors. 
PIGWEEDS.—The flowers are greenish or sometimes tinged with red. 
Leaf-blades smooth a shining above. I. UBBICA. 
Leaf- eee dull abov 
Seed xu yd con m the pericarp, or if adherent, blades of the lower 
Plants Sot Strong-scented: seed and pericarp free. II. BOSCIANA. 
lants SOL -scented : seed and pericarp adheren t. III. VULVARIAE. 
Seed adherent e the pericarp: blades of the lower leaves 
PIBURCCCHEHEAE IV. ALBA. 
I. URBICA 
Plant irregularly branched: leaf-blades irregularly toothed. 1. C. murale. 
II. BOSCIANA 
us plant with the blades of the upper leaves narrow and 
ntire. 2. C. Boscianum. 
III. VULVARIAE 
Diffuse plant with squarish-rhombic leaf-blades. 3. C. Vulvaria. 
IV. ALBA 
Blades of the lower leaves about as wide as lon 4. C. amaranticolor. 
Blades of the lower leaves need ioneer than wide. 
Leaf-blades, Sour the lower ones, entire, lanceolate or 
C 
oblong- lanceolat . C. lanceolatum. 
Leat- blades, toothed or lobed, broader than lanceolate, 
"b : 
Plants bright-green: inflorescence loose and open. 6. C. paganum. 
Piants copiously farinose: inflorescence dense T. album. 
Seeds 1 mm. wide or less: plant strong-scented. 8. C. Berlandieri. 
a 
1. C. eL. Plant deep-green, somewhat mealy, 1-6 dm. tall: leaf-blades 
ovate ie inno -ovate, 2—8 em ong, coarsely, uum id and m RT toothed: 
panieles terminal and ateral, small 
flower-elusters naked, numerous Es clo 
se Pua 1.5 mm. wide, dull, acute mar 
gined. — (NETTLE-LEAVED Goos SEFOOT.) — 
ms Tor and roadsides, tubum pro- 
vinces, to Tex. and S Can. Nat. of 
Eu. a T. Mez., c. A.)—Sum 
C. Boscianum Moq. Plant ad ‘green, 
ng, 3-9 dm 
blades ovate, elliptic , 0 
lanceolate, 1-6 em. long, thin, = lower ones 
ften sinuate: panicle-bran n- 
d 
der, spreading, the flow n. Knut Yu s 
relatively small: seed 1 in- 
ing, obtuse-margine od Woods thickeis, and 
icut a various provinces, rarely Coastal Plain, Ga. to Tex., Minn., and 
3. C. Vulvaria L. Plant white piedi much-branched, the branches b piens 
ndi pignore thickish, ovate, deltoid, e suborbicular, .0.5-2.5 e m. long, 
entire, rela atively long-petioled: flower- clusters simple 
PS: po ETE mm. wide, dull, Hinc rs INKING- vue 
