Helictotrichon desertorum subsp. basalticum

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Habitus and growth type

  • Height [m]: 0.3–0.6
    ?
  • Growth form: 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 – entire
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  • Stipules: absent
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  • Petiole: absent
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Flower

  • Flowering period [month]: May
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  • Flower colour: green
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  • Perianth type: reduced
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  • Perianth fusion: reduced
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  • Inflorescence type: panicula e spiculis composita
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Fruit, seed and dispersal

  • Fruit type: dry fruit – caryopsis
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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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Karyology

  • Chromosome number (2n): 14
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  • Ploidy level (x): 2
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  • 2C genome size [Mbp]: 6197.31
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  • 1Cx monoploid genome size [Mbp]: 3098.65
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  • Genomic GC content: 49.7 %
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Taxon origin

  • Origin in the Czech Republic: native
    ?

Ecological indicator values

  • Ellenberg-type indicator values

  • Light indicator value: 9 – full light plant, occurring only in fully irradiated places, not at less than 50% 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: 1 – strong drought indicator, viable at sites that frequently dry out and confined to dry soils
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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: 2 – transition between values 1 and 3
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  • Salinity indicator value: 0 – not salt tolerant, glycophyte
    ?

Habitat and sociology

  • Occurrence in habitats

    ?
  • 8 Dry grasslands

  • 8C Narrow-leaved sub-continental steppes: 2 – optimum
  • 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
  • Ecological specialization indices

    ?
  • Ecological specialization index for all vegetation types: 5.3
  • Ecological specialization index for non-forest vegetation: 5.3
  • Colonization ability

    ?
  • Index of colonization success (ICS): 1

Distribution and frequency

  • Elevational belt in the Czech Republic: colline belt
    ?
  • Occurrence frequency in the basic grid mapping cells and quadrants of the basic grid mapping cells: ,
    ?
  • Commonness in vegetation plots from the Czech Republic

    ?
  • Occurrence frequency in vegetation plots: 0 %
  • Occurrence frequency in vegetation plots with a cover above 5%: 75 %
  • 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: 10 %
  • Maximum percentage cover in vegetation plots: 13 %
  • Number of habitats with taxon occurrence in the Czech Republic

    ?
  • Number of narrow habitats in which the taxon occurs: 1
  • Number of narrow habitats in which the taxon has its optimum: 1
  • Number of broad habitats in which the taxon occurs: 1
  • 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): VU – vulnerable
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  • Legal protection: critically threatened taxon
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