Herbs, annual, 10-36+ cm tall. Stems erect, often branched from base, branches ascending, reddish purple or red tinged, villous, short-stipitate glandular, more densely so upward. Leaves: basal and lower cauline often deciduous by flowering, petiolate; mid cauline sessile, blade ovate or obovate, 2.5-12 cm, reduced distally, pinnatisect or pinnatifid, abaxially sparsely villous particularly along midvein, stipitate glandular, adaxially sparsely villous or glabrate, sparsely glandular, base expanded auriculate-clasping, segments opposite or oblique, interspersed with triangular lobes along rachis, larger and terminal segments ± lobed, margin spinose-serrate, ± stipitate glandular. Capitula small, numerous or few in often dense terminal corymbiform or corymbiform-paniculiform synflorescences; peduncles densely white villous, ± densely stipitate glandular. Involucre hemispheric, ca. 2 mm in diam.; phyllaries 2-or 3-seriate, subequal, membranous, abaxially sparsely white villous or glabrous, sometimes sparsely glandular (mostly distally), margin hyaline, scarious, ± fimbriate, ciliate, apex acuminate, purple. Marginal female florets purple, tube filiform and short, limb narrowly funnelform, 2-lobed; disk florets 7-11, purple or lobes purple, tube cylindric, 0.6-0.8 mm, limb funnelform, ca. 1.6 mm, lobes triangular. Achenes oblong to fusiform. Fl. and fr. nearly year-round.
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A herb. It grows from seed each year but can grow for a few years. The stems are erect and have ribs along them. The leaves are oval and 3-12 cm long. The flowering head is at the top. The flowers are dark purple-red.
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