Gymnanthemum Cass., Bull. Soc. Philom. Paris 1: 10. 1817.
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https://dx.doi.org/10.3897/phytokeys.37.6499 |
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persistent identifier |
https://treatment.plazi.org/id/4F3579F8-0980-E22F-FFC2-3FFC09BBACC5 |
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treatment provided by |
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scientific name |
Gymnanthemum Cass., Bull. Soc. Philom. Paris 1: 10. 1817. |
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Gymnanthemum Cass., Bull. Soc. Philom. Paris 1: 10. 1817.
Type.
Gymnanthemum senegalense (Pers.) Sch.Bip.
Description.
Small trees. Stems caulescent. Leaves simple, alternate, petiolate, lamina ovate, or elliptic, pubescent, margin serrate, apex acuminate, base attenuate, chartaceous. Capitulescences terminal or axillary, corymbose. Capitula discoid, homogamous, pedunculate. Florets bisexual and fertile. Involucre herbaceous, persistent, apex obtuse. Corolla purple to white, actinomorphic; lobes 5. Anthers 5, syngenesious. Styles purple, 2-branched, inner surface covered with stigmatic papillae, outer surface covered with sweeping hairs reaching to below style bifurcation. Achenes subterete or obovate, usually 10-ribbed, carpopodium present. Pappus in 2 series of bristles, persistent, the outer ones are shorter than the inner ones. Pollen subechinolophate, 3-colporate, with prominent micropuncta.
One species is recognized in Thailand.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.