荇菜 Nymphoides peltata

  • Scientific Name: Nymphoides peltata (S.G.Gmel.) Kuntze
  • Ref: Revis. Gen. Pl. 2:429. 1891
  • Synonyms:
    • Schweyckerta nymphoides (L.) C.C.Gmel.
    • Limnanthemum nymphoides (L.) Hoffmanns. & Link
    • Limnanthemum peltatum S.G.Gmel.
    • Limnanthes nymphoides (L.) Stokes
    • Limnanthes peltata Gray
    • Menyanthes natans Lam.
    • Menyanthes nymphoides L.
    • Villarsia nymphoides (L.) Vent.
    • Villarsia peltata (S.G.Gmel.) Roem. & Schult.
  • English Common Name: fringed water lily, yellow floating heart, floating heart, water fringe, entire marshwort
  • Chinese Common Name: 荇菜/莕菜 xìngcài, 莲叶荇菜/莲叶莕菜 liányè xìngcài
  • Japanese Common Name: アサザ [浅沙/阿佐佐] asaza
  • Family: Menyanthaceae
  • Genus: Nymphoides
  • Distribution: Standing water; below 100-1800 m. Essentially throughout China except Hainan, Qinghai, and Xizang [Japan, Korea, Mongolia, Russia; C and SW Asia, Europe]
  • Photo: 2006, Zhejiang
Rhizomes horizontal. Stem cylindric, unbranched, sometimes producing rootlets from nodes. Leaves alternate at stem base but opposite at apex; petiole cylindric, 5-10 cm, base widened into an amplexicaul sheath; leaf blade ovate-orbicular to orbicular, 1.5-8 cm in diam., subcoriaceous, abaxially purple-brown and densely glandular, adaxially glabrous, base cordate, margin entire, veins indistinct. Flowers usually densely clustered at nodes, 5-merous, distylous. Pedicel 3-7 cm. Calyx 7-9 mm, lobed to near base; lobes elliptic-lanceolate to elliptic, apex obtuse. Corolla golden yellow, 2.5-3 cm, rotate, lobed to near base; lobes obovate, margin broadly membranous and irregularly laciniate, apex rounded to emarginate. Filaments sparsely pilose. Short styled flowers: ovary 5-7 mm; style 1-2 mm; stigma small, filaments 3-4 mm; anthers curved, sagittate, 4-6 mm. Long styled flowers: ovary 0.7-1.7 cm; style to 1 cm; stigma large, 2lobed, suborbicular; filaments 1-2 mm; anthers 2-3.5 mm. Glands golden yellow. Capsules elliptic, 1.7-2.5 × 0.8-1.1 cm. Seeds brown, compressed, elliptic, 4-5 mm, densely ciliate. Fl. and fr. Apr-Oct. 2n = 54. (Flora of China)

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