Juncus minutulus

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Habitus and growth type

  • Height [m]: 0.02–0.1
    ?
  • Growth form: annual herb
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  • Life form: therophyte
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  • Life strategy: R – ruderal
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  • Life strategy (Pierce method based on leaf traits): SR
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  • Life strategy (Pierce method, C-score): 0 %
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  • Life strategy (Pierce method, S-score): 55.5 %
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  • Life strategy (Pierce method, R-score): 44.5 %
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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 – entire
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  • Stipules: absent
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  • Petiole: absent
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  • Leaf life span: summer green
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Flower

  • Flowering period [month]: May–July
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  • Flower colour: green
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  • Flower symmetry: actinomorphic
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  • Perianth type: homochlamydeous
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  • Perianth fusion: free
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  • Inflorescence type: anthella
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  • Dicliny: synoecious
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  • Generative reproduction type: 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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  • Reproduction type: only by seed/spores
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  • Dispersal unit (diaspore): seed
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  • Dispersal strategy: Sparganium (mainly autochory and hydrochory)
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  • Myrmecochory: probably non-myrmecochorous
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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
    ?
  • Temperature indicator value: 6 – transition between values 5 and 7
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  • Moisture indicator value: 8 – transition between values 7 and 9
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  • Reaction indicator value: 5 – indicator of moderate acidity, occurring rarely in strongly acidic as well as in neutral to alkaline conditions
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  • Nutrient indicator value: 5 – occurring at moderately nutrient-rich sites, and less frequently at poor and rich sites
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  • Salinity indicator value: 0 – not salt tolerant, glycophyte
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Habitat and sociology

  • Occurrence in habitats

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  • 3 Aquatic vegetation

  • 3C Macrophytic vegetation of oligotrophic lakes and pools: 1 – rare occurrence
  • 6 Meadows and mesic pastures

  • 6G Vegetation of wet disturbed soils: 1 – rare occurrence
  • 13 Anthropogenic vegetation

  • 13C Annual vegetation of trampled habitats: 1 – rare occurrence
  • 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
  • Colonization ability

    ?
  • Index of colonization success (ICS): 1

Distribution and frequency

  • Floristic zone: northern temperate, southern temperate, submeridional, meridional
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  • Floristic region: Europe, Western Asia
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  • Elevational belt in the Czech Republic: lowlands, colline belt, submontane belt
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  • Occurrence frequency in the basic grid mapping cells and quadrants of the basic grid mapping cells: 12, 12
    ?
  • Number of habitats with taxon occurrence in the Czech Republic

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  • Number of narrow habitats in which the taxon occurs: 3
  • Number of narrow habitats in which the taxon has its optimum: 0
  • Number of broad habitats in which the taxon occurs: 3
  • Number of broad habitats in which the taxon has its optimum: 0

Threats and protection

  • Red List 2017 (national categories): C4b – data deficient taxon
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  • Red List 2017 (IUCN categories): DD – data deficient
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  • Legal protection: not protected by law
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