Asteriscus aquaticus, (L.) Less.

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 139

1. A. aquaticus (L.) Less. , Syn. Gen. Comp. 210 (1832)

( A. citriodorus Heldr. & Halácsy ).

Annual. Stem (2-)10-50 cm, simple or with erecto-patent branches, usually near the apex. Leaves oblanceolate, entire, obtuse, the lower usually petiolate, the upper sessile. Outer involucral bracts 1-2 cm, ovate and coriaceous below, with a long, leaf-like apex, much exceeding the ligules; inner ovate, coriaceous, with or without a short green apex. Ligules deeply 3-toothed at apex; tubular florets 5-lobed. Achenes 1 -5-2 mm; pappus 0-75-1 mm. 2л = 14. Damp or sandy places. Mediterranean region, extending to Portugal and S. Bulgaria. Al BI Bu Cr Ga Gr Hs It Ju Lu Sa Si Tu.