Erigeron strigosus

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Habitus and growth type

  • Height [m]: 0.4–1.5
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  • Growth form: monocarpic perennial non-clonal herb
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  • Life form: therophyte
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  • Life strategy (Pierce method based on leaf traits): SR/CSR
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  • Life strategy (Pierce method, C-score): 13.4 %
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  • Life strategy (Pierce method, S-score): 44.5 %
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  • Life strategy (Pierce method, R-score): 42.1 %
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Leaf

  • Leaf presence and metamorphosis: leaves present, not modified
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  • Leaf arrangement (phyllotaxis): alternate, rosulate
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  • Leaf shape: simple – entire
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  • Stipules: absent
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  • Petiole: both present and absent
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Flower

  • Flowering period [month]: June–September
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  • Flower colour: white, yellow
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  • Flower symmetry: actinomorphic, zygomorphic
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  • Perianth type: calyx reduced, corolla present
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  • Perianth fusion: fused
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  • Shape of the sympetalous corolla or syntepalous perianth: ligulate, tubular
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  • Calyx fusion: pappus
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  • Inflorescence type: corymbothyrsus ex anthodiis compositus
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  • Generative reproduction type: apomixis
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  • Pollinator spectrum: solitary bees, hoverflies (other Hymenoptera)
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Fruit, seed and dispersal

  • Fruit type: dry fruit – achene/cypsela/samara
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  • Dispersal unit (diaspore): fruit, infrutescence or its part
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  • Dispersal strategy: Epilobium (mainly anemochory and autochory)
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  • Myrmecochory: probably myrmecochorous nv
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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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Taxon origin

  • Origin in the Czech Republic: neophyte
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  • Invasion status: naturalized
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  • Geographic origin: North America
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  • Period of introduction: Late Modern Period (1800–1950)
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  • Introduction pathway: unintentional – anthropogenic
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Habitat and sociology

  • Occurrence in habitats

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  • 6 Meadows and mesic pastures

  • 6A Mesic Arrhenatherum meadows: 1 – rare occurrence
  • 6B Montane mesic meadows: 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

Distribution and frequency

  • Elevational belt in the Czech Republic: lowlands, colline belt, submontane belt
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  • Occurrence frequency in the basic grid mapping cells and quadrants of the basic grid mapping cells: 48, 57
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  • 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: 0
  • Number of broad habitats in which the taxon occurs: 1
  • Number of broad habitats in which the taxon has its optimum: 0

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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