Ranunculus sect. Batrachium

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Habitus and growth type

  • Height [m]: 0.05–6
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  • Growth form: clonal herb
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  • Life form: hydrophyte, therophyte
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Leaf

  • Leaf presence and metamorphosis: leaves present, not modified
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  • Leaf arrangement (phyllotaxis): alternate
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  • Leaf shape: simple – palmately divided, simple – forked
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  • Stipules: present
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  • Petiole: present
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  • Leaf life span: summer green, evergreen
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  • Leaf anatomy: hydromorphic
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Flower

  • Flowering period [month]: May–August
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  • Flowering phase: 4 Fagus sylvatica-Galeobdolon (start of mid-spring), 8 Clematis vitalba-Galium sylvaticum (mid-summer)
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  • Flower colour: white
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  • Flower symmetry: actinomorphic
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  • Perianth type: calyx and corolla
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  • Perianth fusion: free
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  • Calyx fusion: aposepalous
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  • Inflorescence type: flores solitarii
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  • Dicliny: synoecious, gynomonoecious
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  • Generative reproduction type: allogamy self-incompatibility, facultative autogamy, mixed mating
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  • Pollination syndrome: insect-pollination, selfing, cleistogamy, pseudocleistogamy
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Fruit, seed and dispersal

  • Fruit type: dry fruit – head of achenes
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  • Fruit colour: brown
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  • Reproduction type: mostly vegetatively, rarely by seed/spores, by seed/spores and vegetatively
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  • Dispersal unit (diaspore): fruit, infrutescence or its part, shoot fragment
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  • Dispersal strategy: Wolffia (mainly hydrochory)
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  • Myrmecochory: non-myrmecochorous (b)
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Belowground organs and clonality

  • Shoot metamorphosis: stolon
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  • Storage organ: stolon
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  • Type of clonal growth organ: stolon
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  • Freely dispersible organs of clonal growth: present
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  • Shoot life span (cyclicity): monocyclic shoots prevailing
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  • Branching type of stem-derived organs of clonal growth: sympodial
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  • Primary root: absent
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  • Persistence of the clonal growth organ [year]: 1
    ?
  • Number of clonal offspring: 0.2
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  • Lateral spreading distance by clonal growth [m]: 0.38
    ?
  • Bud bank

    ?
  • Number of buds per shoot at the soil surface (root buds excluded): 5
  • Number of buds per shoot at a depth of 0–10 cm (root buds excluded): 0
  • Number of buds per shoot at a depth greater than 10 cm (root buds excluded): 0
  • Size of the belowground bud bank (root buds excluded): 3
  • Depth of the belowground bud bank (root buds exluded) [cm]: 1
  • Number of buds per shoot at the soil surface (root buds included): 5
  • Number of buds per shoot at a depth of 0–10 cm (root buds included): 0
  • Number of buds per shoot at a depth greater than 10 cm (root buds included): 0
  • Size of the belowground bud bank (root buds included): 3
  • Depth of the belowground bud bank (root buds included) [cm]: 1

Trophic mode

  • Parasitism and mycoheterotrophy: autotrophic
    ?
  • Carnivory: non-carnivorous
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  • Symbiotic nitrogen fixation: no nitrogen-fixing symbionts
    ?

Karyology

  • Chromosome number (2n): 16, 24, 32, 48
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  • Ploidy level (x): 2, 3, 4, 6
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  • 2C genome size [Mbp]: 4813.89
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  • 1Cx monoploid genome size [Mbp]: 1707.96
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Taxon origin

  • Origin in the Czech Republic: native
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Habitat and sociology

  • Occurrence in habitats

    ?
  • 3 Aquatic vegetation

  • 3A Macrophytic vegetation of eutrophic and mesotrophic still waters: 3 – dominant
  • 3B Macrophytic vegetation of water streams: 4 – constant dominant
  • 3C Macrophytic vegetation of oligotrophic lakes and pools: 2 – optimum
  • 4 Wetland and riverine herbaceous vegetation

  • 4A Reed-beds of eutrophic still waters: 1 – rare occurrence
  • 4B Halophilous reed and sedge beds: 1 – rare occurrence
  • 4C Eutrophic vegetation of muddy substrata: 2 – optimum
  • 4E Reed vegetation of brooks: 1 – rare occurrence
  • 4H Vegetation of low annual hygrophilous herbs: 2 – optimum
  • 4I Vegetation of nitrophilous annual hygrophilous herbs: 1 – rare occurrence

Distribution and frequency

  • Floristic zone: boreal, northern temperate, southern temperate, submeridional, meridional, subtropical, tropical, austral or antarctic
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  • Floristic region: Europe, Asia, Americas, circumpolar
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  • Elevational belt in the Czech Republic: lowlands, colline belt, submontane belt, montane belt
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  • Expansive taxon in the region: Bohemian Thermophyticum, Bohemian Moravian Mesophyticum
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  • Occurrence frequency in the basic grid mapping cells and quadrants of the basic grid mapping cells: 565, 1420
    ?
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