Seseli pallasii

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Habitus and growth type

  • Height [m]: 0.3–1.2
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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
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  • Leaf shape: simple – pinnately divided
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  • Stipules: absent
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  • Petiole: both present and absent
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Flower

  • Flowering period [month]: June–August
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  • Flower colour: white
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  • Flower symmetry: actinomorphic
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  • Perianth type: calyx reduced, corolla present
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  • Perianth fusion: free
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  • Calyx fusion: aposepalous
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  • Inflorescence type: umbella composita
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Fruit, seed and dispersal

  • Fruit type: dry fruit – cremocarp
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  • Dispersal unit (diaspore): fruit, infrutescence or its part
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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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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: 8 – transition between values 7 and 9
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  • Moisture indicator value: 3 – missing on damp soil
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  • Reaction indicator value: 8 – transition between values 7 and 9, occurring mostly in calcium-rich conditions
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  • Nutrient indicator value: 3 – occurring at nutrient-poor sites more frequently than at average sites and exceptionally at 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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  • 8 Dry grasslands

  • 8C Narrow-leaved sub-continental steppes: 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
  • Diagnostic taxon

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  • Diagnostic taxon of associations: THD06 Astragalo exscapi-Crambetum tatariae
  • Ecological specialization indices

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  • Ecological specialization index for all vegetation types: 6.2
  • Ecological specialization index for non-forest vegetation: 6.4
  • Colonization ability

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  • Index of colonization success (ICS): 1

Distribution and frequency

  • Elevational belt in the Czech Republic: lowlands, colline belt
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  • Occurrence frequency in the basic grid mapping cells and quadrants of the basic grid mapping cells: 19, 28
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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%: 16.7 %
  • 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: 4 %
  • Maximum percentage cover in vegetation plots: 13 %
  • Number of habitats with taxon occurrence in the Czech Republic

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  • Number of narrow habitats in which the taxon occurs: 1
  • Number of narrow habitats in which the taxon has its optimum: 0
  • Number of broad habitats in which the taxon occurs: 1
  • Number of broad habitats in which the taxon has its optimum: 0

Threats and protection

  • Red List 2017 (national categories): C2b – endangered taxon, rare and declining
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  • Red List 2017 (IUCN categories): EN – endangered
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  • Legal protection: endangered taxon
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