Crypsis schoenoides

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Habitus and growth type

  • Height [m]: 0.03–0.3
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  • Growth form: annual herb
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  • Life form: therophyte
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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]: July–October
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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: capitulum e spiculis compositum
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Fruit, seed and dispersal

  • Fruit type: dry fruit – caryopsis
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  • Fruit colour: brown
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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): 36
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  • Ploidy level (x): 4
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  • 2C genome size [Mbp]: 2660.68
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  • 1Cx monoploid genome size [Mbp]: 665.17
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  • Genomic GC content: 46.8 %
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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: 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: 7 – humidity indicator, focus on well moistened, but not wet 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: 7 – occurring at nutrient-rich sites more often than at average sites and only exceptionally at poor sites
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  • Salinity indicator value: 9 – euhaline to hypersaline, on soils with a very high and in dry periods extremely high salt content
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Habitat and sociology

  • Occurrence in habitats

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  • 10 Saline vegetation

  • 10G Continental vegetation of annual halophilous grasses: 3 – dominant
  • 10I Inland saline meadows: 2 – optimum
  • 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 classes: TA Crypsietea aculeatae
  • Constant taxon

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  • Constant taxon of classes: TA Crypsietea aculeatae
  • Constant taxon of alliances: TAA Cypero-Spergularion salinae
  • Constant taxon of associations: TAA02 Heleochloëtum schoenoidis
  • Dominant taxon

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  • Dominant taxon of associations: TAA02 Heleochloëtum schoenoidis
  • Ecological specialization indices

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  • Ecological specialization index for all vegetation types: 5.2
  • Ecological specialization index for non-forest vegetation: 5

Distribution and frequency

  • Elevational belt in the Czech Republic: lowlands
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  • Occurrence frequency in the basic grid mapping cells and quadrants of the basic grid mapping cells: 17, 32
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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%: 72.7 %
  • Occurrence frequency in vegetation plots with a cover above 25%: 72.7 %
  • Occurrence frequency in vegetation plots with a cover above 50%: 36.4 %
  • Mean percentage cover in vegetation plots: 41.9 %
  • Maximum percentage cover in vegetation plots: 88 %
  • 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: 2
  • 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): C1t – critically threatened taxon, declining
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  • Red List 2017 (IUCN categories): CR – critically endangered
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  • Legal protection: critically threatened taxon
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