2. Corispermum pallasii Steven (common bugseed)

Pl. 357 g–i; Map 1544

Plants sparsely to densely stellate-hairy. Stems 10–60 cm long. Leaves 1–7 cm long, linear or more commonly narrowly lanceolate. Inflorescences mostly stout, narrowly club-shaped, the flowers more or less evenly spaced, densely overlapping above the basal portion. Bracts 4–10 mm long, ovate, mostly wider than the fruits. Fruits 3.5–4.5 mm long, obovate to elliptic-obovate in outline, usually broadly angled at the tip, the wing relatively well developed (0.3–0.5 mm wide), the body yellowish brown or greenish brown to brown. August–October.

Uncommon in the Missouri and Mississippi River floodplains (North Dakota and South Dakota to Missouri, Michigan, and Illinois; Europe, Asia). Banks of rivers; also disturbed, open, sandy areas.

Specimens of C. pallasii correspond to those treated as the Eurasian native C. hyssopifolium L. by Steyermark (1963). The few Missouri specimens are mostly immature and somewhat atypical in the morphology of their developing fruits. In his studies of Chenopodiaceae for the Flora of North America Project, Sergei Mosyakin of the Institute of Botany in Kiev, Ukraine, has annotated these as “transitional toward C. americanum.”