少花狸藻 Utricularia gibba

  • Scientific Name: Utricularia gibba L.
  • Ref: Sp. Pl.:18. 1753
  • Synonyms:
    • Megopiza fornicata (Leconte) Raf.
    • M. integra (Leconte) Raf.
    • M. longirostris (Leconte) Raf.
    • Plesisa bipartita (Elliott) Raf.
    • Trilobulina crenata Raf.
    • T. fibrosa (Walter) Raf.
    • Utricularia alba Hoffmanns. ex Link
    • U. ambigua A.DC.
    • U. anomala A.St.-Hil. & Girard
    • U. aphylla Ruiz & Pav.
    • U. bifidocalcar R.D.Good
    • U. biflora Lam.
    • U. biflora Roxb.
    • U. biflora Bonpl. ex A.DC.
    • U. bipartita Elliott
    • U. conferta Hassk.
    • U. crenata Vahl
    • U. diantha Schult.
    • U. diflora Roxb.
    • U. elegans Wall.
    • U. emarginata Benj.
    • U. exoleta R.Br.
    • U. fibrosa Walter
    • U. fornicata Leconte
    • U. furcata Pers.
    • U. gayana A.DC.
    • U. gibba subsp. exoleta (R.Br.) P.Taylor
    • U. gibba f. natans Komiya
    • U. gibbosa Hill
    • U. gracilis Kunth
    • U. integra Leconte
    • U. kalmaloensis A.Chev.
    • U. khasiana J.Joseph & Mani
    • U. longirostris Leconte
    • U. macrorhyncha Barnhart
    • U. nagurae Makino
    • U. natans Salzm. ex A.St.-Hil. & Girard
    • U. obtusa Sw.
    • U. pallens A.St.-Hil. & Girard
    • U. pallens var. natans A.St.-Hil. & Girard
    • U. parkeriana A.DC.
    • U. pauciflora Blume
    • U. pterosperma Edgew.
    • U. pumila Walter
    • U. riccioides A.Chev.
    • U. roxburghii Spreng.
    • U. saharunporensis Royle ex Oliv.
    • U. secunda Benj.
    • U. spirandra C.Wright ex Griseb.
    • U. sumatrana Miq.
    • U. tenuifolia Benj.
    • U. tenuis Cav.
    • U. tenuis var. poeppigii A.DC.
    • U. tricrenata Baker ex Hiern
    • Vesiculina gibba (L.) Raf.
  • English Common Name: floating bladderwort, humped bladderwort
  • Chinese Common Name: 少花狸藻 shǎohuā lízǎo
  • Japanese Common Name: ミカワタヌキモ [三河狸藻] mikawatanukimo, イトタヌキモ [糸狸藻] itotanukimo
  • Family: Lentibulariaceae
  • Genus: Utricularia
  • Distribution: Shallow still or slowly flowing water, pools, lakes, bogs, swamps, marshes, rice fields; near sea level to 900 m. Anhui, Chongqing, Fujian, Guangdong, Guangxi, Hainan, S Henan, Hubei, Hunan, Jiangsu, Taiwan, Yunnan, Zhejiang [India, Indonesia, Japan, Malaysia, Myanmar, Nepal, Papua New Guinea, Philippines, Sri Lanka, Thailand, Vietnam; Africa, tropical America, SW Asia, Europe, Indian Ocean islands (Mauritius), Madagascar, North and South America, Pacific islands (New Caledonia, Palau)].
  • Photo: 10/12/2014, Hangzhou Botanical Garden, Zhejiang
Annuals or perennials, affixed or suspended aquatic. Rhizoids absent or present, filiform, branched. Stolons filiform, much branched, often mat-forming. Traps lateral on leaf segments, stalked, ovoid, 1-2.5 mm, mouth lateral; appendages 2, dorsal, branched, setiform, with shorter setae. Leaves numerous on stolons, 0.5-1.5 cm; primary segments (1 or)2, unbranched or sparsely dichotomously branched into 3-8 ultimate segments; ultimate segments capillary, slightly flattened, margin entire or sparsely denticulate, apex and teeth setulose. Inflorescences erect, 2-15 cm, 1-3(-6)-flowered; peduncle terete, 0.3-0.5 mm thick, glabrous; scale 1, similar to bracts; bracts basifixed, semiorbicular, ca. 1 mm, minutely glandular, apex truncate and obscurely dentate. Pedicel erect to spreading, 2-12 mm, filiform; bracteoles absent. Calyx lobes subequal, broadly ovate to orbicular, 1.5-2 mm, apex rounded. Corolla yellow, 4-8 mm; lower lip slightly smaller than upper lip, base with a prominent 2-lobed swelling, apex rounded; spur narrowly conic to cylindric from a conic base, shorter or longer than corolla lower lip, distal part sparsely stipitate glandular, apex obtuse; palate densely pubescent; upper lip broadly ovate to suborbicular, ca. 2 × as long as upper calyx lobe, apex obscurely 3-lobed. Filaments 1-1.5 mm, curved; anther thecae confluent. Ovary globose; style evident; stigma lower lip transversely elliptic, upper lip obsolete. Capsule globose, 2-3 mm in diam., 2-valvate. Seeds lenticular, 0.8-1 mm in diam., margin broadly winged, wing shallowly and irregularly dentate; seed coat with small prominent reticulations. Fl. Apr-Nov, fr. May-Dec. 2n = 28. (Flora of China)

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