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Information Annual herb, stems branched from the base, decumbent or erect, up to c. 250 mm long, thinly white-tomentose, leafy. Leaves up to 70 x 8 mm, but often much less than half that size, spathulate or oblanceolate, apex acute to obtuse, mucronate, both surfaces thinly grey-tomentose sometimes glabrescent. Heads c. 3 x 2,5 mm, in small stalked or sessile clusters racemosely ar­ranged. Involucral bracts in 3 series, pellucid, pale buff, ageing palest brown, sometimes purplish around the stereome. Receptacle tuberculate. Flowers c. 150—225, 140-220 ("female"), 4-6 ("bisexual"), in the proportion of at least 25 : 1. Achenes 0,5 mm long with duplex hairs. Pappus bristles of ("female") flowers scabridulous, of Q flowers with more or less barbellate tips.

Information Annuals [biennials or perennials], (1–)3–30 cm; usually taprooted, sometimes fibrous-rooted. Stems usually 1, erect (often with decumbent-ascending branches from bases; ± woolly-tomentose, not glandular). Leaves mostly cauline; alternate; ± sessile; blades oblanceolate to spatulate or linear, bases ± cuneate, margins entire, faces concolor, gray and tomentose. Heads disciform, usually in ± capitate clusters (in axils of leaves or bracts), sometimes in spiciform glomerules. Involucres narrowly to broadly campanulate, 2.5–4 mm. Phyllaries in 3–5 series, usually white or tawny to brown (opaque or hyaline, often shiny; stereomes usually glandular distally), ± equal to unequal, chartaceous toward tips (inner phyllaries narrowly oblong, usually white-tipped and protruding distal to outer). Receptacles flat, smooth, epaleate. Peripheral (pistillate) florets 40–80 (more numerous than bisexual); corollas purplish or whitish. Inner (bisexual) florets 4–7; corollas purplish or whitish. Cypselae oblong, faces usually glabrous, sometimes minutely papillate (hairs ± papilliform, not myxogenic); pappi readily falling, of 8–12 distinct, barbellate bristles in 1 series. x = 7.

Information Annual herb; stems 5–30 cm long, prostrate but distally erect, white-tomentose. Leaves oblanceolate or narrowly spatulate, 1–7 cm long, 0.2–0.8 cm wide, base attenuate but half-clasping the stem, apex acute or obtuse, thinly white- or grey-tomentose on both surfaces, sometimes glabrescent. Capitula 2–3 mm long, in small clustered racemes to 3 cm long; stalks of individual capitula 1–5 mm long, tomentose; receptacle flat, shortly honeycombed; phyllaries in 3 series, lanceolate, 2–2.5 mm long, acute, lamina translucent. Outer florets pale yellow, 140–220, tube filiform, 1–1.2 mm long, minutely toothed, style 1.1–1.3 mm long; inner florets pale yellow, 4–6, tube narrowly infundibuliform, 0.9–1.2 mm long, lobes 0.2 mm long and pilose, anthers ± 0.5 mm long, style 1–1.3 mm long with truncate branches. Achenes ellipsoid, 0.35–0.5 mm long, glabrous; pappus 1–1.5 mm long, barbellate, of inner florets distally almost subplumose.

Information Tufted grey-woolly annual herb, stems decumbent or erect, up to c. 200 mm long, simple or sparingly branched, leafy. Leaves erect or spreading, mostly 8—30 x 2—4 mm, generally oblanceolate, the smaller ones linear-oblong, apex obtuse to subacute, mucronate. Heads c. 3 x 3—4 mm, few to several clustered at the branch tips sur­rounded by leaves, sometimes several clusters on short leafy branches corymbose-ly arranged. Involucral bracts in 4 series, outer pale brown, woolly outside, tips of inner acute or subacute, exceeding the flowers, opaque, dirty white or palest buff, sometimes tinged purple above the stere-ome. Receptacle shallowly tuberculate. Flowers 143-244, 139-240 ("female"), 4-11 ("bisexual"), in the proportion 17-40 (-60) : 1. Achenes 0,5 mm long with myxogenic duplex hairs. Pappus on ("female") flowers scabrid, on ("bisexual") flowers with subplumose tips. Fig. 4:4.