Annuals 0.1-0.15(-0.3) m tall, tufted; epidermis verruculose. Leaves linear-acuminate, 40-80 x 1-3 mm, flat, soft, with a reddish tinge below. Inflorescence on an exserted ribbed peduncle; umbel compound, 4-6 erect side branchlets 10-30 mm long, arising from below solitary terminal semi-globose capi-tulum, occasionally doubly compound; in paedogenic seedlings with a solitary few-flowered capitulum. Flowers with tepals c. 3 mm long, usually streaked with shiny blackish brown or fawn, and broad central band colourless and scabrid, fading with age, outer tepals narrow, aristate, inner ones broader, with a wide membranous margin usually overtopping outer ones. Stamens 6; anthers long; filaments short. Ovary ovoid; style 1 mm long; stigmas red, much exserted, 3-5 mm long. Capsule oblong-globose, 3 mm long, obtuse, apiculate, thin-walled, pale; seeds narrowly ellipsoid, asymmetrical, 0.5 mm long, apiculate at apex and base, brown; testa white, membranous, hygroscopic. Flowering in spring.
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Tufted annual, 6-15 cm. Leaves linear. Flowers in solitary capitula, streaked with black or brown.