Aromatic annual or perennial herbs; stems winged, with resin ducts. Leaves alternate, dentate, hairy, decurrent. Capitula disciform, terminal, forming a large lax inflorescence; flowers mauve, pink or yellow. Phyllaries narrow, the outer often recurved. Receptacle flat, without scales. Outer florets female, filiform, 3-lobed; inner florets bisexual, 5-lobed. Anthers without tails. Style 2-fid; with obtuse sweeping hairs reaching below the fork. Achenes cylindric, hairy, without resin ducts.
Pappus of free barbellate bristles in 1 row; each bristle with appressed teeth. Derivation of name: after Dr Franz Josef Lagger, Swiss physician and botanist, 1802-1870 Worldwide: 17 species in tropical Africa, Arabian Peninsula and Asia Caprivi: 1 taxon. |
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