Xanthium saccharatum

new search

Habitus and growth type

  • Height [m]: 0.2–1.5
    ?
  • Growth form: annual herb
    ?
  • Life form: therophyte
    ?

Leaf

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

Flower

  • Flowering period [month]: August–October
    ?
  • Flower colour: green
    ?
  • Flower symmetry: actinomorphic
    ?
  • Perianth type: calyx absent, corolla sometimes present
    ?
  • Perianth fusion: fused
    ?
  • Shape of the sympetalous corolla or syntepalous perianth: tubular
    ?
  • Inflorescence type: panicula ex anthodiis composita
    ?

Fruit, seed and dispersal

  • Fruit type: dry fruit – achene/cypsela/samara
    ?
  • Dispersal unit (diaspore): fruit, infrutescence or its part
    ?
  • Dispersal strategy: Bidens (mainly autochory and epizoochory)
    ?
  • Myrmecochory: non-myrmecochorous (b) nv
    ?

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: North America, South America
    ?
  • Year of the first record in the wild: 1965
    ?
  • 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: 7 – heat indicator, occurring in relatively warm lowlands
    ?
  • Moisture indicator value: 6 – transition between values 5 and 7
    ?
  • Reaction indicator value: 7 – indicator of slightly acidic to slightly basic conditions, never occurring in very acidic conditions
    ?
  • Nutrient indicator value: 7 – occurring at nutrient-rich sites more often than at average sites and only exceptionally at poor sites
    ?
  • 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

  • Elevational belt in the Czech Republic: lowlands, colline belt
    ?
  • Occurrence frequency in the basic grid mapping cells and quadrants of the basic grid mapping cells: 5, 5
    ?

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
    ?
This web page uses for the attendance analysis cookies. By using this web you agree with this. More info.