Grau, J. & Lippert, W. (1980) The Compositae of the Flora Zambesiaca area, 11. Astereae (continued). Kirkia 12(1) 1-14
Annual or perennial herbs. Leaves linear to ovate, simple; margin entire or ± dentate. Capitula heterogamous, radiate; ray florets female, in 1 series, often blue or violet; disk florets tubular, bisexual, yellow, their lobes spreading, sometimes with red margins. Phyllaries 3-4-seriate, imbricate; outer much shorter than inner. Achenes oblong, flattened, ± hairy and always glandular. Pappus hairs scabrid, whitish to yellowish, in 2, sometimes indistinct, rows. Worldwide: c.250 species, America, Europe and Asia; 17 in Africa. DRC: 0 taxa. |
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