The Flora of Canada describes a Chenopodium
album complex containing six "microspecies", with C. album
as the type. One of these microspecies, C. berlandieri = C.
dacoticum, is considered a separate species by Flora of Alberta.
The plant depicted here is C. Album.
Flora of Alberta distinguishes C.
berlandieri from C. album according to:
leaves green above, mealy beneath
blades ovate to lanceolate, usually
with several teeth along each side
leaves yellowish green, densely
blades ovate to rhombic, entire or
The rest of the points in the keys leading to Chenopodium
album are as follows:
leaves small, linear to ovate, entire
or with small teeth or lobes; NOT large, broadly ovate, with 2 or 3
large triangular lobes or teeth on each side
plants neither spiny nor with
plants may be glabrous, scurfy or
pubescent; but NOT with long, soft hairs
leaves slender, elongate, mostly
alternate; NOT scale-like, opposite
leaves not circular in cross section
leaves not fleshy, sometimes linear but
usually wider, flat, often toothed or lobed, usually scurfy or pubescent
(Not all these points apply to all genera in Chenopodiaceae, but they
all do apply to genus Chenopodium.)
leaves without stipules
leaves not compound and not very deeply
leaves not orbicular or reniform