Part 1, 1916] CHENOPODIACEAE 
VIII. VuLvarran 
Leaf-blades entire, as broad as long. eras 
Leaf-blades more or less lobed, usually longer than broad. 
Leaf-blades large, 1-4 cm. long, obscurely lobed at the base. 
Leaf-blades small, 0.5 cm. long or less, the lower ones deeply trilobate. 
IX. ALBA 
Blades of the lower leaves about as broad as long. 
prod leaves and inflorescence bright-red; plants 1-3 meters high, 
stout. 
Plants bluish-green, never red, 3-10 dm. high, usually slender. 
Blades of all the leaves conspicuously longer than broad, often twice as 
long or longer. 
Calyx open, exposing the fruit. 
Calyx closely enclosing the fruit. 
Plants coarsely and loosely farinose, yellowish; seed coarsely 
punctate. 
Plants very finely and closely farinose; seed finely puncticulate or 
smooth. 
Seed dull; blades of the upper leaves conspicuously hastate. 
Seed shining. 
Leaf-blades, all except the lowest, entire, lanceolate or 
oblong-lanceolate, bright-green. 
meal rg nearly all dentate or lobed, broader than lance- 
olate. 
Seed 1.3-2 mm. broad; plants not ill-scented. 
Plants bright-green; inflorescence tusually loose and 
open. 
Plants copiously farinose; inflorescence usually dense. 
Seed 0.8-1 mm. broad; plants usually ill-scented. 
Leaf-blades conspicuously 3-lobed, the upper hastate; 
plants stout, yellowish. 
Leaf-blades dentate, never 3-lobed; plants slender, 
never yellowish. 
X. ARISTATA 
A single species. 
XI. Incisa 
A single species in North America. 
XII. Botrves 
Leaf-blades pinnatifid nearly to the midrib into linear segments. 
Leaf-blades sinuate-pinnatifid half way to the midrib or less into broad 
rounded lobes. 
XIII. 
Stems white-villous; upper leaf-blades dentate or sinuate-pinnatifid. 
Stems puberulent or glabrate; upper leaf-blades mostly entire, or obscurely 
dentate. 
AMBROSIOIDIA 
XIV. CaRINnaTa 
A single species in North America. 
XV. GrLaucs 
Leaf-blades 1-4 cm. wide, glabrate in age. 
Leaf-blades 0.3-1.5 cm. wide, farinose beneath in age. 
Flowers mostly in loose elongate interrupted spikes; inflorescence not 
villous; seed smooth. 
Flowers in dense short axillary spikes; inflorescence sparsely villous; 
seed finely tuberculate. 
XVI. 
Stems erect, 3-10 dm. high; leaf-blades sinuate-dentate; glomerules of 
flowers in dense elongate spikes; seed 0.8—-1 mm. broad. 
Stems prostrate or ascending, 2 dm. long or less; leaf-blades usually has- 
tately lobed, otherwise entire; glomerules of flowers solitary or sub- 
spicate; seed 0.5-0.6 mm. broad. . 
RUBRA 
XVII. CaLrFornica 
Leaf-blades entire or subsinuate. 
Leaf-blades deeply dentate. 
I. Urbica. 
26. 
27. 
28. 
29. 
30. 
31. 
32. 
33. 
34, 
35. 
36. 
37. 
38. 
39. 
40. 
4l, 
42, 
43. 
44, 
45. 
46. 
47. 
48. 
49. 
50. 
51. 
52. 
Cc. 
Cc. 
C. 
Cc. 
Cc. 
Cc. 
iH 
. Vulvaria. 
- Watsoni. 
Parryi, 
amaranticolor. 
viride. 
. ferulatum, 
dacoticum, 
petiolare. 
lanceolatum, 
paganum. 
album. 
hircinum. 
. Berlandieri. 
aristatum. 
. incisum. 
. dissectum, 
. Botrys. 
vagans. 
. ambrosioides, 
. carinatum. 
C. farinosum. 
Cc. 
c. 
Pubescence sparse or abundant, of inflated whitish hairs. 
rhombic or deltoid, sinuate-dentate, succulent, lustrous on the upper surface. 
glaucum. 
salinum, 
. rubrum. 
. humile. 
Bonus-Henricus. 
californicum, 
Leaf-blades 
Glomerules 
