Chenopodium watsonii
(Watson's Goosefoot)
Family: Chenopodiaceae (Goosefoot)

Chenopodium spp. are particularly difficult to identify using a key. Someone smarter than me identified this one. Leaves smell like rubber when crushed. Mature seeds are whitish with a honeycombed texture. Watson's Goosefoot is an uncommon plant on sandy soils of the plains.

Chenopodium incanum
(not pictured) is very similar but has dark, smooth seeds.

Vegetation zone:  Plains
Time of bloom:  June - August
Origin:  Native
Eastern Colorado Wildflowers