Chenopodium album agg.

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Habitus and growth type

  • Height [m]: 0.1–1.8
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  • Growth form: annual herb
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  • Life form: therophyte
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  • Life strategy: CR – competitor/ruderal, R – ruderal
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Leaf

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

  • Flowering period [month]: June–November
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  • Flowering phase: 8 Clematis vitalba-Galium sylvaticum (mid-summer)
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  • Flower colour: green
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  • Flower symmetry: actinomorphic
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  • Perianth type: homochlamydeous
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  • Perianth fusion: free, fused
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  • Inflorescence type: panicula e pseudospicis composita, pseudospica
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  • Dicliny: synoecious
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  • Generative reproduction type: facultative allogamy, facultative autogamy, mixed mating
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  • Pollination syndrome: wind-pollination
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Fruit, seed and dispersal

  • Fruit type: dry fruit – achene/cypsela/samara
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  • Fruit colour: green, yellow, brown, grey
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  • Reproduction type: only by seed/spores
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  • Dispersal unit (diaspore): seed, fruit, infrutescence or its part
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  • Dispersal strategy: Allium (mainly autochory)
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  • Myrmecochory: non-myrmecochorous (b)
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Belowground organs and clonality

  • Shoot life span (cyclicity): monocyclic shoots prevailing
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  • Primary root: present
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  • Bud bank

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  • Number of buds per shoot at the soil surface (root buds excluded): 2
  • Number of buds per shoot at a depth of 0–10 cm (root buds excluded):
  • Number of buds per shoot at a depth greater than 10 cm (root buds excluded):
  • Size of the belowground bud bank (root buds excluded): 2
  • Depth of the belowground bud bank (root buds exluded) [cm]:
  • Number of buds per shoot at the soil surface (root buds included): 2
  • Number of buds per shoot at a depth of 0–10 cm (root buds included):
  • Number of buds per shoot at a depth greater than 10 cm (root buds included):
  • Size of the belowground bud bank (root buds included): 2
  • Depth of the belowground bud bank (root buds included) [cm]:

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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Karyology

  • Chromosome number (2n): 18, 36, 54
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  • Ploidy level (x): 2, 4, 6
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  • 2C genome size [Mbp]: 2291.61
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  • 1Cx monoploid genome size [Mbp]: 538.32
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Taxon origin

  • Origin in the Czech Republic: native
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  • Geographic origin: Europe, Mediterranean, North America, South America, Asia
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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
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  • Temperature indicator value: 6x – transition between values 5 and 7 (generalist)
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  • Moisture indicator value: 5 – indicator of fresh soils, focus on soils of average moisture, missing on wet and on soils that frequently dry out
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  • Reaction indicator value: 6x – transition between values 5 and 7 (generalist)
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  • Nutrient indicator value: 7 – occurring at nutrient-rich sites more often than at average sites and only exceptionally at poor sites
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  • Salinity indicator value: 1 – salt tolerant, mostly on low-salt to salt-free soils, but occasionally on slightly salty soils
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  • Indicator values for disturbance

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  • Whole-community disturbance frequency indicator value: -0.05
  • Herb layer disturbance frequency indicator value: 0.02
  • Whole-community disturbance severity indicator value: 0.9
  • Herb layer disturbance severity indicator value: 0.9
  • Whole-community structure based disturbance indicator value: 0.67
  • Herb layer structure-based disturbance indicator value: 0.71

Habitat and sociology

  • Occurrence in habitats

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  • 3 Aquatic vegetation

  • 3C Macrophytic vegetation of oligotrophic lakes and pools: 1 – rare occurrence
  • 4 Wetland and riverine herbaceous vegetation

  • 4A Reed-beds of eutrophic still waters: 1 – rare occurrence
  • 4B Halophilous reed and sedge beds: 1 – rare occurrence
  • 4D Riverine reed vegetation: 1 – rare occurrence
  • 4E Reed vegetation of brooks: 1 – rare occurrence
  • 4H Vegetation of low annual hygrophilous herbs: 2 – optimum
  • 4I Vegetation of nitrophilous annual hygrophilous herbs: 3 – dominant
  • 4J River gravel banks: 1 – rare occurrence
  • 4L Nitrophilous herbaceous fringes of lowland rivers: 1 – rare occurrence
  • 6 Meadows and mesic pastures

  • 6C Pastures and park grasslands: 1 – rare occurrence
  • 6G Vegetation of wet disturbed soils: 1 – rare occurrence
  • 8 Dry grasslands

  • 8A Hercynian dry grasslands on rock outcrops: 1 – rare occurrence
  • 8C Narrow-leaved sub-continental steppes: 1 – rare occurrence
  • 8F Thermophilous forest fringe vegetation: 1 – rare occurrence
  • 9 Sand grasslands and rock-outcrop vegetation

  • 9B Open vegetation of acidic sands: 1 – rare occurrence
  • 9C Festuca grasslands on acidic sands: 1 – rare occurrence
  • 10 Saline vegetation

  • 10G Continental vegetation of annual halophilous grasses: 1 – rare occurrence
  • 10I Inland saline meadows: 1 – rare occurrence
  • 11 Heathlands and scrub

  • 11J Willow galleries of loamy and sandy river banks: 1 – rare occurrence
  • 11L Tall mesic and xeric shrub: 1 – rare occurrence
  • 11N Low xeric scrub: 1 – rare occurrence
  • 11R Scrub and pioneer woodland of forests clearings: 1 – rare occurrence
  • 12 Forests

  • 12T Robinia pseudacacia plantations: 1 – rare occurrence
  • 12U Plantations of broad-leaved non-native trees: 1 – rare occurrence
  • 12V Spruce plantations: 1 – rare occurrence
  • 12W Pine and larch plantations: 1 – rare occurrence
  • 13 Anthropogenic vegetation

  • 13A Annual vegetation of ruderal habitats: 4 – constant dominant
  • 13B Annual vegetation of arable land: 2 – optimum
  • 13C Annual vegetation of trampled habitats: 2 – optimum
  • 13D Perennial thermophilous ruderal vegetation: 2 – optimum
  • 13E Perennial nitrophilous herbaceous vegetation of mesic sites: 1 – rare occurrence
  • 13F Herbaceous vegetation of forests clearings and Rubus scrub: 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
  • Diagnostic taxon

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  • Constant taxon

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  • Constant taxon of classes: XB Stellarietea mediae
  • Dominant taxon

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  • Ecological specialization indices

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  • Ecological specialization index for all vegetation types: 4.7
  • Ecological specialization index for non-forest vegetation: 4.7
  • Ecological specialization index for forest vegetation: 3.5

Distribution and frequency

  • Floristic zone: boreal, northern temperate, southern temperate, submeridional, meridional, subtropical, tropical, austral or antarctic
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  • Floristic region: Europe, Asia, Western Asia, Africa, Americas, circumpolar
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  • Elevational belt in the Czech Republic: lowlands, colline belt, submontane belt, montane belt
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  • Occurrence frequency in the basic grid mapping cells and quadrants of the basic grid mapping cells: 630, 2056
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  • Commonness in vegetation plots from the Czech Republic

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  • Occurrence frequency in vegetation plots: 7.4 %
  • Occurrence frequency in vegetation plots with a cover above 5%: 20.7 %
  • Occurrence frequency in vegetation plots with a cover above 25%: 7.9 %
  • Occurrence frequency in vegetation plots with a cover above 50%: 4 %
  • Mean percentage cover in vegetation plots: 8.1 %
  • Maximum percentage cover in vegetation plots: 99 %
  • Number of habitats with taxon occurrence in the Czech Republic

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  • Number of narrow habitats in which the taxon occurs: 32
  • Number of narrow habitats in which the taxon has its optimum: 6
  • Number of broad habitats in which the taxon occurs: 9
  • Number of broad habitats in which the taxon has its optimum: 2
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