Close-up image of flower head.

Image of part of the plant.

English common names: Johnson grass, Aleppo grass, Aleppo milletgrass. Invasive species profile, with several photos, from Pacific Island Ecosystems at Risk.

An exotic species resource page from The Nature Conservancy. Includes description, images, natural history, and control strategy for this cosmopolitan weed.

Species description, photo, and recommendations on control methods, from Illinois Nature Preserves Commission.

A short description and an account of its medicinal uses.

Description of a book offered for sale.