Dahlia pinnata

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Habitus and growth type

  • Height [m]: 0.25–2
    ?
  • Life form: geophyte
    ?

Leaf

  • Leaf presence and metamorphosis: leaves present, not modified
    ?
  • Leaf arrangement (phyllotaxis): opposite
    ?
  • Leaf shape: compound – bipinnate, compound – tripinnate
    ?
  • Stipules: absent
    ?
  • Petiole: present
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Flower

  • Flowering period [month]: July-October
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  • Flower colour: white, yellow, orange, pink, red, violet, brown
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  • Flower symmetry: actinomorphic, zygomorphic
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  • Perianth: calyx absent, corolla present
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  • Fusion of the perianth: fused
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  • Shape of the sympetalous corolla or syntepalous perigon: ligulate, tubular
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  • Inflorescence type: anthodium solitarium
    ?

Fruit, seed and dispersal

  • Fruit type: dry fruit – achene/cypsela/samara
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  • Fruit colour: brown, black
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  • Myrmecochory: probably non-myrmecochorous
    ?

Trophic mode

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

  • Chromosome number (2n): 64
    ?
  • Ploidy level (x): 4
    ?
  • 2C genome size [Mbp]: 8449.65
    ?
  • 1Cx monoploid genome size [Mbp]: 2112.41
    ?
  • Genomic GC content: 42.2 %
    ?

Taxon origin

  • Origin in the Czech Republic: neophyte
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  • Invasion status: casual
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  • Geographic origin: North America
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  • Introduction pathway: deliberate introduction
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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

Threats and protection

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