Ludwigia palustris

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Habitus and growth type

  • Height [m]: 0.1–0.4
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  • Growth form: annual herb
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  • Life form: therophyte (hemicryptophyte, hydrophyte)
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  • Life strategy: CSR – competitor/stress-tolerator/ruderal
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  • Life strategy (Pierce method based on leaf traits): R/SR
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  • Life strategy (Pierce method, C-score): 13 %
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  • Life strategy (Pierce method, S-score): 24 %
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  • Life strategy (Pierce method, R-score): 63 %
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Leaf

  • Leaf presence and metamorphosis: leaves present, not modified
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  • Leaf arrangement (phyllotaxis): opposite
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  • Leaf shape: simple – entire
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  • Stipules: absent
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  • Petiole: present
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  • Leaf life span: evergreen
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  • Leaf anatomy: hygromorphic
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Flower

  • Flowering period [month]: June–August
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  • Flower colour: green
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  • Perianth type: calyx present, corolla absent
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  • Calyx fusion: aposepalous
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  • Inflorescence type: flores solitarii
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  • Dicliny: synoecious, monoecious
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  • Generative reproduction type: facultative autogamy
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  • Pollination syndrome: selfing
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Fruit, seed and dispersal

  • Fruit type: dry fruit – capsule
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  • Fruit colour: green, brown
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  • Reproduction type: by seed/spores and vegetatively
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  • Dispersal unit (diaspore): seed, shoot fragment
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  • Dispersal strategy: Sparganium (mainly autochory and 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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  • Shoot life span (cyclicity): monocyclic shoots prevailing
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  • Primary root: absent
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  • Bud bank

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  • Number of buds per shoot at the soil surface (root buds excluded):
  • Number of buds per shoot at a depth of 0–10 cm (root buds excluded): 8
  • Number of buds per shoot at a depth greater than 10 cm (root buds excluded):
  • Size of the belowground bud bank (root buds excluded): 18
  • Depth of the belowground bud bank (root buds exluded) [cm]: 3
  • Number of buds per shoot at the soil surface (root buds included):
  • Number of buds per shoot at a depth of 0–10 cm (root buds included): 8
  • Number of buds per shoot at a depth greater than 10 cm (root buds included):
  • Size of the belowground bud bank (root buds included): 18
  • Depth of the belowground bud bank (root buds included) [cm]: 3

Trophic mode

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

  • Origin in the Czech Republic: native
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Ecological indicator values

  • Ellenberg-type indicator values

  • Light indicator value: 8 – light plant, only exceptionally occurring at less than 40% of diffuse radiation incident in an open area
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  • Temperature indicator value: 6 – transition between values 5 and 7
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  • Moisture indicator value: 9 – wetness indicator, focus on often soaked, poorly aerated soils
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  • Reaction indicator value: 4 – transition between values 3 and 5
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  • Nutrient indicator value: 7 – occurring at nutrient-rich sites more often than at average sites and only exceptionally at poor sites
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  • Salinity indicator value: 1 – salt tolerant, mostly on low-salt to salt-free soils, but occasionally on slightly salty soils
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Habitat and sociology

  • Affinity to the forest environment

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  • Affinity to the forest environment in Thermophyticum: 0 – taxon that does not spontaneously occur in Czech forests
  • Affinity to the forest environment in Mesophyticum and Oreophyticum: 0 – taxon that does not spontaneously occur in Czech forests

Distribution and frequency

  • Floristic zone: northern temperate, southern temperate, submeridional, meridional, subtropical
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  • Floristic region: Europe, Americas
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  • Continentality degree: 4
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  • Distribution range extension along the continentality gradient: 4
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  • Occurrence frequency in the basic grid mapping cells and quadrants of the basic grid mapping cells: 0, 0
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Threats and protection

  • Red List 2017 (national categories): A3 – extinct or missing taxon (uncertain case)
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  • Red List 2017 (IUCN categories): NA – not applicable
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  • Legal protection: not protected by law
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