Aira caryophyllea

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Habitus and growth type

  • Height [m]: 0.04–0.35
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  • Growth form: annual herb
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  • Life form: therophyte
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  • Life strategy: SR – stress-tolerator/ruderal
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  • Life strategy (Pierce method based on leaf traits): SR
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  • Life strategy (Pierce method, C-score): 0 %
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  • Life strategy (Pierce method, S-score): 58.7 %
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  • Life strategy (Pierce method, R-score): 41.3 %
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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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  • Leaf life span: spring green
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  • Leaf anatomy: mesomorphic
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Flower

  • Flowering period [month]: April–June
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  • Flowering phase: 4 Fagus sylvatica-Galeobdolon (start of mid-spring)
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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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  • Dicliny: synoecious
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  • Generative reproduction type: autogamy, facultative autogamy
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  • Pollination syndrome: selfing
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Fruit, seed and dispersal

  • Fruit type: dry fruit – caryopsis
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  • Reproduction type: only by seed/spores
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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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Belowground organs and clonality

  • Shoot life span (cyclicity): monocyclic shoots prevailing
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  • Primary root: absent
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  • Bud bank

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  • Number of buds per shoot at the soil surface (root buds excluded): 5
  • Number of buds per shoot at a depth of 0–10 cm (root buds excluded): 0
  • Number of buds per shoot at a depth greater than 10 cm (root buds excluded): 0
  • Size of the belowground bud bank (root buds excluded): 5
  • Depth of the belowground bud bank (root buds exluded) [cm]: 1
  • Number of buds per shoot at the soil surface (root buds included): 5
  • Number of buds per shoot at a depth of 0–10 cm (root buds included): 0
  • Number of buds per shoot at a depth greater than 10 cm (root buds included): 0
  • Size of the belowground bud bank (root buds included): 5
  • Depth of the belowground bud bank (root buds included) [cm]: 1

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: 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: 6 – transition between values 5 and 7
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  • Moisture indicator value: 2 – transition between values 1 and 3
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  • Reaction indicator value: 4 – transition between values 3 and 5
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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
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Habitat and sociology

  • Occurrence in habitats

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  • 6 Meadows and mesic pastures

  • 6C Pastures and park grasslands: 1 – rare occurrence
  • 7 Acidophilous grasslands

  • 7B Submontane Nardus grasslands: 1 – rare occurrence
  • 8 Dry grasslands

  • 8E Acidophilous dry grasslands: 1 – rare occurrence
  • 9 Sand grasslands and rock-outcrop vegetation

  • 9B Open vegetation of acidic sands: 2 – optimum
  • 9C Festuca grasslands on acidic sands: 1 – rare occurrence
  • 9E Acidophilous vegetation of spring therophytes and succulents: 1 – rare occurrence
  • 11 Heathlands and scrub

  • 11A Dry lowland to subalpine heathlands: 1 – rare occurrence
  • 12 Forests

  • 12L Boreo-continental pine forests: 1 – rare occurrence
  • 12W Pine and larch plantations: 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
  • Ecological specialization indices

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  • Ecological specialization index for all vegetation types: 4.7
  • Ecological specialization index for non-forest vegetation: 4.7
  • Colonization ability

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  • Index of colonization success (ICS): 1

Distribution and frequency

  • Floristic zone: northern temperate, southern temperate, submeridional, meridional, subtropical, austral or antarctic
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  • Floristic region: Europe, Africa
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  • Continentality degree: 4
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  • Distribution range extension along the continentality gradient: 4
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  • 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: 244, 429
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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: 3.7 %
  • 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: 9
  • Number of narrow habitats in which the taxon has its optimum: 1
  • Number of broad habitats in which the taxon occurs: 6
  • 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: not protected by law
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