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Capitula disciform, on short peduncles. Involucral bracts with resin canals. Outer florets female, almost filiform. Cypselas of outer florets non-myxogenic, conspicuously wrinkled with scattered short-stalked glands, but without myxogenic cells. Pericarp several cell-layers thick. Inner florets hermaphrodite. Corollas as in P. schinziana. Style-branches with resin canals. Cypselas of inner florets as in P. schinziana.
Annual, erect or suberect herb, up to 300 mm high. Leaves alternate, sessile, bipinnatisect, lobes linear, acute, hairy. Capitula discoid, solitary, large, pedunculate; involucral bracts in several rows, obtuse, with broad scarious margins. Florets bisexual, corolla tubular, 4-lobed, yellow. Flowering time May-Oct. Pappus absent. Cypselae turbinate, smooth, of outer florets angled and crenate.
Like F. dichotoma but leaves sparsely pilose with linear-lanceolate lobes, involucral bracts with resin canals and often dark papery margins, flowerheads disciform; pappus absent, and cypselas dimorphic, outer ones tuberculate, inner ones 3-ribbed.
Sprawling annual to 15 cm. Leaves bipinnatisect. Flower heads discoid, solitary on short peduncles, pale yellow, bracts with membranous margins.
