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Herbs annual, 0.4-2.2 m tall. Stem erect, sparsely branched above, stout, light yellow or purple ribbed, glabrous or sparsely farinose. Petiole 2-7 cm; leaf blade fresh green on both surfaces, broadly ovate to ovate-triangular, 6-15 × 5-13 cm, glabrous or slightly farinose, base rounded, truncate, or subcordate, margin palmately lobed to deeply erose-dentate, apex acute or acuminate; lobes in 2 or 3 pairs, unequal, apex usually acute to acuminate; upper leaves smaller, leaf blade mostly triangular-hastate, margin with a few lobelike teeth, sometimes subentire. Flowers bisexual and female, usually several per glomerule, these arranged in spreading panicles on upper branches. Perianth segments 5, narrowly ovate, abaxially keeled, slightly farinose, margin membranous, apex obtuse. Stamens 5. Utricle lenticular; pericarp white dotted, membranous, adnate to seed. Seed horizontal, black, not lustrous, of same shape as utricle, usually 2-3 mm in diam., distinctly orbicular pitted; embryo annular. Fl. and fr. Jul-Sep.


Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA

Source: Missouri Botanical Garden

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