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Chenopodium polyspermum

Habitus and growth type

  • Height [m]: 0.1–0.6 ?
  • Growth form: annual herb ?
  • Life form: therophyte ?
  • Life strategy: CR - competitor/ruderal ?
  • Life strategy (Pierce method based on leaf traits): R/CR ?
  • Life strategy (Pierce method, C-score): 33.8 % ?
  • Life strategy (Pierce method, S-score): 1.1 % ?
  • Life strategy (Pierce method, R-score): 65 % ?

Leaf

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

Flower

  • Flowering period [month]: May-October ?
  • Flowering phase: 8 Clematis vitalba-Galium sylvaticum (mid-summer) ?
  • Flower colour: green ?
  • Flower symmetry: actinomorphic ?
  • Perianth: homochlamydeous ?
  • Fusion of the perianth: fused ?
  • Inflorescence type: panicula e dichasiis composita ?
  • Dicliny: synoecious ?
  • Pollen vector: wind ?

Fruit, seed and dispersal

  • Fruit type: dry fruit – achene/cypsela/samara ?
  • Fruit colour: yellow, red, brown ?
  • Reproduction type: only by seed/spores ?
  • Dispersal unit (diaspore): seed, fruit, infrutescence or its part ?
  • Dispersal strategies: Allium (mainly autochory) ?
  • Myrmecochory: non-myrmecochorous (b) ?

Belowground organs and clonality

  • Shoot life span (cyclicity): monocyclic shoots prevailing ?
  • Primary root presence: present ?
  •   Bud bank ?
  • Number of buds per shoot at the soil surface (root buds excluded): 10
  • 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): 10
  • Depth of the belowground bud bank (root buds exluded) [cm]: 1
  • Number of buds per shoot at the soil surface (root buds included): 10
  • 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): 10
  • Depth of the belowground bud bank (root buds included) [cm]: 1

Trophic mode

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

Karyology

  • Chromosome number (2n): 18 ?
  • Ploidy level (x): 2 ?
  • 2C genome size [Mbp]: 1392.79 ?
  • 1Cx monoploid genome size [Mbp]: 696.4 ?
  • Genomic GC content: 39 % ?

Taxon origin

  • Origin in the Czech Republic: native ?

Ecological indicator values

  •   Ellenberg-type indicator values
  • Light indicator value: 7 - half-light plant, mostly occurring at full light, but also in the shade up to about 30% of diffuse radiation incident in an open area ?
  • Temperature indicator value: 6 - transition between values 5 and 7 ?
  • Moisture indicator value: 6 - transition between values 5 and 7 ?
  • Reaction indicator value: 6x - transition between values 5 and 7 (generalist) ?
  • Nutrient indicator value: 8 - pronounced nutrient indicator ?
  • Salinity indicator value: 0 - not salt tolerant, glycophyte ?
  •   Indicator values for disturbance ?
  • Whole-community disturbance frequency indicator value: -0.01
  • Herb layer disturbance frequency indicator value: 0.1
  • Whole-community disturbance severity indicator value: 0.9
  • Herb layer disturbance severity indicator value: 0.9
  • Whole-community structure based disturbance indicator value: 0.7
  • Herb layer structure-based disturbance indicator value: 0.71

Habitat and sociology

  •   Occurrence in habitats ?
  •   3 Aquatic vegetation
  • 3C Macrophytic vegetation of oligotrophic lakes and pools: 1 - rare occurrence
  •   4 Wetland and riverine herbaceous vegetation
  • 4B Halophilous reed and sedge beds: 1 - rare occurrence
  • 4C Eutrophic vegetation of muddy substrata: 1 - rare occurrence
  • 4D Riverine reed vegetation: 1 - rare occurrence
  • 4H Vegetation of low annual hygrophilous herbs: 2 - optimum
  • 4I Vegetation of nitrophilous annual hygrophilous herbs: 2 - optimum
  • 4J River gravel banks: 1 - rare occurrence
  • 4K Petasites fringes of montane brooks: 1 - rare occurrence
  • 4L Nitrophilous herbaceous fringes of lowland rivers: 1 - rare occurrence
  •   6 Meadows and mesic pastures
  • 6G Vegetation of wet disturbed soils: 1 - rare occurrence
  •   10 Saline vegetation
  • 10I Inland saline meadows: 1 - rare occurrence
  •   11 Heathlands and scrub
  • 11R Scrub and pioneer woodland of forests clearings: 1 - rare occurrence
  •   13 Anthropogenic vegetation
  • 13A Annual vegetation of ruderal habitats: 2 - optimum
  • 13B Annual vegetation of arable land: 2 - optimum
  • 13F Herbaceous vegetation of forests clearings and Rubus scrub: 1 - rare occurrence
  •   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
  •   Diagnostic taxon ?
  •   Constant taxon ?
  •   Ecological specialization indices ?
  • Ecological specialization index for all vegetation types: 4.9
  • Ecological specialization index for non-forest vegetation: 5
  • Ecological specialization index for forest vegetation: 5.9

Distribution and frequency

  • Floristic zone: northern temperate, southern temperate, submeridional ?
  • Floristic region: Europe, Western Siberia ?
  • Continentality degree: 6 ?
  • Distribution range extension along the continentality gradient: 6 ?
  • Elevational belt in the Czech Republic: lowlands, colline belt, submontane belt, montane belt ?
  • Occurrence frequency in the basic grid mapping cells and in quadrants of the basic grid mapping cells: 565, 1521 ?
  •   Commonness in vegetation plots from the Czech Republic ?
  • Occurrence frequency in vegetation plots: 1.6 %
  • Occurrence frequency in vegetation plots with a cover above 5%: 8.6 %
  • Occurrence frequency in vegetation plots with a cover above 25%: 1.2 %
  • Occurrence frequency in vegetation plots with a cover above 50%: 0.2 %
  • Mean percentage cover in vegetation plots: 3.4 %
  • Maximum percentage cover in vegetation plots: 63 %
  •   Number of habitats with taxon occurrence in the Czech Republic ?
  • Number of narrow habitats in which the taxon occurs: 15
  • Number of narrow habitats in which the taxon has its optimum: 4
  • Number of broad habitats in which the taxon occurs: 6
  • Number of broad habitats in which the taxon has its optimum: 2

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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