Annual herb c. 40-190 mm tall, stem simple to well branched from the base, branches divaricate, eventually producing a rounded twiggy bushlet, each twig terminating in a capitate inflorescence, stems pubescent with eglandular hairs c. 0.3-0.75 mm long, retrorse and appressed on upper parts, tending to spread lower down, often minutely glandular-puberulous as well on upper parts, leafy. Leaves opposite becoming alternate upwards, blade of lowermost leaves 2.5-17 x 1.75-13 mm, ovate to elliptic, tapering abruptly or more gradually into a petiolar part c. 1.5-20 mm long (up to c. twice as long as blade), upper leaves rapidly smaller and petiolar part less conspicuous, oblanceolate, margins entire to obscurely few-toothed, both surfaces pubescent, hairs on lower margins up to 0.5-0.75 mm long. Flowers few to several in crowded heads c. 3-7 mm in diam., elongating slightly in fruit. Bracts: lowermost c. 2.5-4 x 1-1.75 mm, rarely slightly longer and leaf-like, mostly broadly to narrowly elliptic, shorter and narrower upwards, adnate to pedicel and about halfway up calyx tube, puberulous on backs, patent hairs up to 0.5-1.5 mm on margins. Pedicels of lowermost flowers up to 0.5 mm long, shorter upwards. Calyx bilabiate, tube 0.75-1.5 mm long, anticous lobes 1-1.5 x 0.5-0.75 mm, pubescent, hairs up to 0.25-0.4 mm long. Corolla tube 2-2.75 x 0.75-1.2 mm, widening slightly in throat, limb 4-5 mm across the lateral lobes, posticous lobes c. 0.6-1 x 0.5-1 mm, anticous lobes c. 2-2.5 x 0.75-1.3 mm, all lobes elliptic-oblong, white to lilac-mauve, bearded at base of posticous lip, a few hairs sometimes on lateral lobes. Stamens 4, anthers 0.5-0.75 mm long. Stigma well exserted. Capsules 2-3.5 x 1.5-1.75 mm Seeds 0.4-0.5 mm long, elliptic in outline, smooth, dark blue-grey.
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Single-stemmed to divaricately branched annual or perennial herb, ± 40-190 mm tall, hairs on stem eglandular, often minutely glandular on upper parts. Leaves petiolate, ovate to elliptic, becoming smaller upwards, entire or toothed, softly pubescent. Flowers few to several in crowded capitate heads, all lobes white to cream-coloured to lilac-mauve, stamens 4, seeds smooth, dark blue-grey.