Fall panicum – Panicum dichotomiflorum
Panicum dichotomiflorum Michx.
Poaceae (Grass family)
Erect summer annual.
Leaves are hairless at maturity, up to 20 inches long with a prominent, white midvein. Leaf sheaths are also hairless at maturity, and there are no hairs on the sheath margin. Seedlings may have hairs on the lower leaf surface and sheath, becoming less hairy with age.
Erect, bending in a zigzag manner at the nodes, up to 6 feet tall.
Flowers and fruit
The seedhead is a large, open and spreading panicle that may be purple-tinted at maturity and yields small, straw-colored, oval seeds.
Wild proso millet (P. miliaceum L.)
Differs by having long, mostly perpendicular, stiff hairs covering both leaf surfaces and sheath and a nodding panicle with large, shiny, olive-brown to black, oval-shaped seeds. Seeds often persist on the roots of seedlings.
Witchgrass (P. capillare L.)
Differs by having dense, mostly perpendicular, soft hairs covering the entire plant.