Arabis sudetica

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Habitus and growth type

  • Height [m]: 0.2–0.35
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  • Growth form: monocarpic perennial non-clonal herb
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  • Life form: hemicryptophyte
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Leaf

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

  • Flowering period [month]: June–July
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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: racemus
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Fruit, seed and dispersal

  • Fruit type: dry fruit – siliqua
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  • Fruit colour: brown
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  • Dispersal unit (diaspore): seed
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  • Dispersal strategy: Allium (mainly autochory)
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  • Myrmecochory: non-myrmecochorous (b)
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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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Karyology

  • Chromosome number (2n): 16
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  • Ploidy level (x): 2
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  • 2C genome size [Mbp]: 498.4
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  • 1Cx monoploid genome size [Mbp]: 249.2
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  • Genomic GC content: 37.7 %
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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: 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
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  • Temperature indicator value: 3 – cool indicator, occurring mainly in subalpine areas
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  • Moisture indicator value: 6 – transition between values 5 and 7
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  • Reaction indicator value: 7 – indicator of slightly acidic to slightly basic conditions, never occurring in very acidic conditions
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  • Nutrient indicator value: 6 – transition between values 5 and 7
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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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  • 2 Alpine and subalpine grasslands

  • 2B Subalpine tall-forb and tall-grass vegetation: 2 – optimum
  • 6 Meadows and mesic pastures

  • 6B Montane mesic meadows: 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

Distribution and frequency

  • Elevational belt in the Czech Republic: montane belt, subalpine belt
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  • Occurrence frequency in the basic grid mapping cells and quadrants of the basic grid mapping cells: 6, 9
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  • Commonness in vegetation plots from the Czech Republic

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  • Occurrence frequency in vegetation plots: 0 %
  • Occurrence frequency in vegetation plots with a cover above 5%: 0 %
  • Occurrence frequency in vegetation plots with a cover above 25%: 0 %
  • Occurrence frequency in vegetation plots with a cover above 50%: 0 %
  • Mean percentage cover in vegetation plots: 1.7 %
  • Maximum percentage cover in vegetation plots: 2 %
  • Number of habitats with taxon occurrence in the Czech Republic

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  • Number of narrow habitats in which the taxon occurs: 2
  • Number of narrow habitats in which the taxon has its optimum: 1
  • Number of broad habitats in which the taxon occurs: 2
  • Number of broad habitats in which the taxon has its optimum: 1

Threats and protection

  • Red List 2017 (national categories): C1r – critically threatened taxon, rare
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  • Red List 2017 (IUCN categories): EN – endangered
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  • Legal protection: critically threatened taxon
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