Annual herb 5-12 cm high, branching near base; stems sparsely leafy, hispid, with short and long eglandular multicellular hairs, and with shortly stipitate glands in upper parts. Basal leaves decreasing in a rosette soon withering, oblanceolate, 15-22 x 3-4.5 mm, narrowed to petiole-like base, thinly hispid with eglandular multicellular hairs; upper leaves 6-15(-18) x (0.5-)1-4 mm, oblanceolate, alternate, becoming linear towards the apical part, hispid with long eglandular multicellular and short glandular hairs. Capitula heterogamous, radiate, solitary on terminal peduncles 20-55 mm long. Involucre 7-12 x 3-5 mm, hemispherical to broadly campanulate; (8-)13-20 phyllaries per involucre, 3-5 x 0.3-2 mm, arranged in 1-2 rows, with eglandular and glandular hairs; outer phyllaries linear with narrow margins, inner phyllaries oblanceolate with broad scarious margins and fimbriate tips; receptacle flat, with slightly distinct alveoles. Ray florets female, 10-16 per capitulum, tube cylindrical, glandular-hairy, 2-2.5 mm long; ray limb spreading, elliptic-oblanceolate, 7-11 x 1.3-2 mm, blue to deep mauve. Style terete with linear branches, partially exserted, branches ± 1.5 mm long, acute, margins stigmatic. Cypselas broadly obovoid, 2(-2.2) x (0.8-)1-1.4 mm, flattened with a conspicuously wrinkled surface and sinuate thickened margins, faces and margins covered with short adpressed twin hairs 0.1-0.2 mm long, pale brown; pappus absent. Disc florets bisexual, 40-130 per capitulum, yellowish, inner florets functionally male, tube cylindrical but widening slightly in upper part, glandular-hairy, 4-5 mm long, shortly five-lobed; lobes triangular, recurved, 0.7-1 x 0.5 mm, with thickened margins. Anthers 1.7-2 mm long, including apical appendage 0.3-0.5 mm; anther base obtuse, ecaudate. Style 3.5-4 mm, terete, branches ± 1.5 mm long, linear, flattened with stigmatic margins and sterile, triangular, papillate apical appendages. Cypselas as in ray florets; pappus bristles uniseriate, ± 25 per cypsela, barbellate, caducous, 3(-3.7) mm long, somewhat connate at base in a minute collar, white.
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Sparsely leafy annual, similar to F. bergeriana and F. merxmuelleri, but leaves always alternate, leaf hairs eglandular and short-glandular, and cypselas conspicuously wrinkled, with margins thickened and sinuate.