Eclipta 鱧腸屬
型態特徵
Erect annual herbs, branched, strigose. Leaves opposite, toothed. Heads terminal on stems and branches or axillary, peduncled, heterogamous. Involucre campanulate, bracts imbricate, in ca. 2 series. Receptacle flat or convex, paleaceous, paleae awn-like. Florets whitish. Ray florets bisexual, mostly fertile, corolla tubular, white, 4- or rarely 5-lobed. Anthers entire or very shortly bifid at base. Style branches obtuse, mammillate at apex. Achenes thick, those of ray florets 3-angled, those of disc florets compressed, 4-angled, apex truncate and depressed, margins with 1–3 minute teeth, coarsely hairy, tuberculate. Pappus none, or of a few short teeth.
About four species in the tropics; two species in Taiwan.