Centaurea jacea subsp. angustifolia

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Leaf

  • Leaf presence and metamorphosis: leaves present, not modified
    ?
  • Leaf arrangement (phyllotaxis): alternate
    ?
  • Leaf shape: simple – entire
    ?
  • Stipules: absent
    ?
  • Petiole: both present and absent
    ?

Flower

  • Flower colour: pink
    ?
  • Flower symmetry: actinomorphic, zygomorphic
    ?
  • Perianth type: calyx reduced, corolla present
    ?
  • Perianth fusion: fused
    ?
  • Shape of the sympetalous corolla or syntepalous perianth: funnel-shaped, tubular
    ?
  • Calyx fusion: pappus
    ?
  • Inflorescence type: corymbothyrsus ex anthodiis compositus
    ?

Fruit, seed and dispersal

  • Fruit type: dry fruit – achene/cypsela/samara
    ?
  • Dispersal unit (diaspore): fruit, infrutescence or its part
    ?
  • Dispersal strategy: Allium (mainly autochory)
    ?
  • Myrmecochory: myrmecochorous
    ?

Trophic mode

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

Taxon origin

  • Origin in the Czech Republic: native
    ?

Ecological indicator values

  • Ellenberg-type indicator values

  • Light indicator value: 7 – half-light plant, mostly occurring at full light, but also in the shade up to about 30% of diffuse radiation incident in an open area
    ?
  • Temperature indicator value: 5x – moderate heat indicator, occurring from lowland to montane belt, mainly in submontane-temperate areas (generalist)
    ?
  • Moisture indicator value: 4x – transition between values 3 and 5 (generalist)
    ?
  • Reaction indicator value: 6x – transition between values 5 and 7 (generalist)
    ?
  • Nutrient indicator value: 4x – transition between values 3 and 5 (generalist)
    ?
  • Salinity indicator value: 1 – salt tolerant, mostly on low-salt to salt-free soils, but occasionally on slightly salty soils
    ?

Habitat and sociology

  • Affinity to the forest environment

    ?
  • 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

  • Continentality degree: 6
    ?
  • Distribution range extension along the continentality gradient: 5
    ?
  • Elevational belt in the Czech Republic: lowlands, colline belt
    ?
  • Occurrence frequency in the basic grid mapping cells and quadrants of the basic grid mapping cells: 298, 597
    ?

Threats and protection

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