State Rank Reason (see State Rank above)
Native to parts of eastern and central North America and introduced into Montana. This is the most abundant pigweed in the state.
Monoecious. Stems erect, reddish below, 10–100 cm with sparsely pubescent foliage. Leaf blade lanceolate to ovate, 2–10 cm long, just longer than petiole. Inflorescence often red-tinged, dense, terminal and axillary panicles; bracts lanceolate-attenuate, 3–5 mm long, short-pointed. Flowers: sepals 5, ca. 3 mm long with blunt to rounded tips and excurrent midveins; stamens 4 to 5. Utricle ca. 2 mm, nearly as long as sepals (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX)