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General: Sunflower Family (Asteraceae). Madia sativa is an annual herb, 2-24 dm tall, and strongly scented. The stems are stiff and very leafy, with glandular hairs throughout the plant producing a very sticky substance that covers the stems and leaves. The small (7-15 mm involucre), greenish-yellow, sunflower-like heads are sessile in dense cymes or panicle-like clusters. The fruits are small (2.5-5 mm) black or dark brown achenes.