Madia Molina

Tarweed (en), Madie (fr)

Genus

Angiosperms > Asterales > Asteraceae

Characteristics

Annual herbs. Stems erect, sparsely to strongly branched, glandular-pubescent. Leaves simple, opposite below, then alternate, entire to slightly toothed. Inflorescence racemose, cymose or paniculate, glandular-hairy. Capitula pedunculate, heterogamous; involucral bracts uniseriate, involute, enclosing ray florets; receptacle with a single row of scales between ray and disk florets. Ray florets equal in number to involucral bracts, female, shortly ligulate, usually yellow. Disc florets (1–) 2–many, male (not in Australia) or bisexual; corolla usually yellow; anthers without appendages; style branches flattened, with short apical appendages. Achenes obovoid, longitudinally striate, glabrous; ray achenes somewhat compressed or 3-angled. Pappus absent.
More
Annual or occasionally perennial herbs. Lvs opposite at least below, often alternate above, simple, usually entire, sometimes denticulate at base. Capitula subsessile or pedunculate, in loose to congested corymbs or racemes. Involucral bracts in 1 row, foliaceous. Receptacle flat or convex, with a single ring of scales between ray and disc florets and these often united, otherwise glabrous or hairy. Outer florets ♀, ligulate, usually yellow. Inner florets ☿ or functionally ♂, tubular. Achenes all similar, usually laterally compressed, narrowed to base, ± 3-angled and sometimes ribbed; pappus usually 0, sometimes a small corona or of scales.
Life form annual
Growth form herb
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Sexuality hermaphrodite
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Hardiness (USDA) 4-10

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Cultivation

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