Helianthemum nummularium

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Habitus and growth type

  • Height [m]: 0.1–0.2
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  • Growth form: dwarf shrub
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  • Life form: chamaephyte
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  • Life strategy: CS – competitor/stress-tolerator
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Leaf

  • Leaf presence and metamorphosis: leaves present, not modified
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  • Leaf arrangement (phyllotaxis): opposite
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  • Leaf shape: simple – entire
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  • Stipules: present
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  • Petiole: present
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  • Leaf life span: evergreen
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  • Leaf deciduousness in woody plants: evergreen, winter deciduous
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  • Leaf anatomy: scleromorphic, mesomorphic
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  • Functional leaf type in woody plants: broad deciduous or semi-deciduous, sclerophyllous
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Flower

  • Flowering period [month]: June-July
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  • Flowering phase: 6 Cornus sanguinea-Melica uniflora (start of early summer)
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  • Flower colour: yellow
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  • Flower symmetry: actinomorphic
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  • Perianth type: calyx and corolla
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  • Perianth fusion: free
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  • Calyx fusion: aposepalous
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  • Inflorescence type: cincinnus
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  • Dicliny: synoecious, gynodioecious
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  • Generative reproduction type: facultative allogamy
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  • Pollination syndrome: wind-pollination, insect-pollination, selfing
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  • Pollinator spectrum: honeybee, bumblebees, hoverflies, flies s. l. (solitary bees, other Diptera, butterflies, nitidulids, unknown)
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Fruit, seed and dispersal

  • Fruit type: dry fruit – capsule
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  • Reproduction type: mostly by seed/spores, rarely vegetatively
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  • Dispersal unit (diaspore): seed
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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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  • Branching type of stem-derived organs of clonal growth: sympodial
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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): 8
  • Number of buds per shoot at a depth of 0–10 cm (root buds excluded): 9
  • 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): 16
  • Depth of the belowground bud bank (root buds exluded) [cm]: 3
  • Number of buds per shoot at the soil surface (root buds included): 8
  • Number of buds per shoot at a depth of 0–10 cm (root buds included): 9
  • 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): 16
  • Depth of the belowground bud bank (root buds included) [cm]: 3

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: casual
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  • Geographic origin: Europe, Mediterranean
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  • Introduction pathway: deliberate introduction
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Habitat and sociology

  • 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

  • Floristic zone: northern temperate, southern temperate, submeridional, meridional
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  • Floristic region: Europe
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  • Occurrence frequency in the basic grid mapping cells and quadrants of the basic grid mapping cells: 265, 478
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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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