Heads ± numerous, disciform, white or whitish; invol scanty or none, its bracts (when present) imbricate, scarious, resembling the bracts of the cylindric or obconic to merely convex receptacle; outer fls pistillate, fertile, filiform-tubular, in several series, the outermost of these epappose and each subtended and partly enclosed by a concave or boat-shaped bract, the others bractless and with a pappus of capillary bristles; central fls 2–11, appearing perfect but often sterile, with capillary pappus; anthers shortly tailed; achenes small, scarcely nerved; low white-woolly annuals with alternate, entire lvs. 10+, Eurasia, n. Afr.
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