Conyza bonariensis

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Habitus and growth type

  • Life form: therophyte
    ?
  • Life strategy: CR – competitor/ruderal
    ?

Leaf

  • Leaf presence and metamorphosis: leaves present, not modified
    ?
  • Leaf arrangement (phyllotaxis): alternate
    ?
  • Leaf shape: simple – entire
    ?
  • Stipules: absent
    ?
  • Petiole: absent
    ?
  • Leaf life span: summer green
    ?
  • Leaf anatomy: mesomorphic
    ?

Flower

  • Flower colour: yellow-white
    ?
  • Flower symmetry: actinomorphic, zygomorphic
    ?
  • Perianth type: calyx reduced, corolla present
    ?
  • Perianth fusion: fused
    ?
  • Shape of the sympetalous corolla or syntepalous perianth: ligulate, tubular
    ?
  • Calyx fusion: pappus
    ?
  • Inflorescence type: panicula ex anthodiis composita
    ?
  • Dicliny: gynomonoecious
    ?
  • Generative reproduction type: facultative autogamy
    ?
  • Pollination syndrome: selfing
    ?

Fruit, seed and dispersal

  • Fruit type: dry fruit – achene/cypsela/samara
    ?
  • Reproduction type: only by seed/spores
    ?
  • Dispersal unit (diaspore): fruit, infrutescence or its part
    ?
  • Dispersal strategy: Epilobium (mainly anemochory and autochory)
    ?
  • Myrmecochory: probably non-myrmecochorous
    ?

Trophic mode

  • Parasitism and mycoheterotrophy: autotrophic
    ?
  • Carnivory: non-carnivorous
    ?
  • Symbiotic nitrogen fixation: no nitrogen-fixing symbionts
    ?

Taxon origin

  • Origin in the Czech Republic: neophyte
    ?
  • Invasion status: casual
    ?
  • Geographic origin: South America
    ?
  • Year of the first record in the wild: 1964
    ?
  • Period of introduction: Recent Past (1950–2000)
    ?
  • Introduction pathway: unintentional – anthropogenic
    ?

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
    ?
  • Temperature indicator value: 9 – extreme heat indicator, restricted to warmest sites in southern Central Europe
    ?
  • Moisture indicator value: 4 – transition between values 3 and 5
    ?
  • Reaction indicator value: 7 – indicator of slightly acidic to slightly basic conditions, never occurring in very acidic conditions
    ?
  • Nutrient indicator value: 6 – transition between values 5 and 7
    ?
  • Salinity indicator value: 1 – salt tolerant, mostly on low-salt to salt-free soils, but occasionally on slightly salty soils
    ?

Habitat and sociology

  • 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

Distribution and frequency

  • Floristic zone: subtropical, tropical, austral or antarctic
    ?
  • Floristic region: Americas
    ?
  • Occurrence frequency in the basic grid mapping cells and quadrants of the basic grid mapping cells: 6, 6
    ?

Threats and protection

  • Red List 2017 (national categories): taxon is not on the Red List
    ?
  • Red List 2017 (IUCN categories): LC(NA) – least concern (taxon is not on the Red List)
    ?
  • Legal protection: not protected by law
    ?
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