Astragalus asper

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Habitus and growth type

  • Height [m]: 0.3–0.8
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  • Growth form: polycarpic perennial non-clonal herb
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  • Life form: hemicryptophyte
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Leaf

  • Leaf presence and metamorphosis: leaves present, not modified
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  • Leaf arrangement (phyllotaxis): alternate
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  • Leaf shape: compound – imparipinnate
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  • Stipules: present
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  • Petiole: present
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Flower

  • Flowering period [month]: May–June
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  • Flower colour: yellow
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  • Flower symmetry: zygomorphic
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  • Perianth type: calyx and corolla
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  • Perianth fusion: free
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  • Calyx fusion: synsepalous
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  • Inflorescence type: racemus
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Fruit, seed and dispersal

  • Fruit type: dry fruit – legume
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  • Dispersal unit (diaspore): seed
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  • Dispersal strategy: Allium (mainly autochory)
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  • Myrmecochory: probably non-myrmecochorous nv
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Belowground organs and clonality

  • 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): 5
  • Number of buds per shoot at a depth of 0–10 cm (root buds excluded): 15
  • 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): 20
  • Depth of the belowground bud bank (root buds exluded) [cm]: 4
  • Number of buds per shoot at the soil surface (root buds included): 5
  • Number of buds per shoot at a depth of 0–10 cm (root buds included): 15
  • 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): 20
  • Depth of the belowground bud bank (root buds included) [cm]: 4

Trophic mode

  • Parasitism and mycoheterotrophy: autotrophic
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  • Carnivory: non-carnivorous
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  • Symbiotic nitrogen fixation: symbiosis with rhizobia
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Taxon origin

  • Origin in the Czech Republic: native
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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
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  • Temperature indicator value: 8 – transition between values 7 and 9
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  • Moisture indicator value: 2 – transition between values 1 and 3
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  • Reaction indicator value: 7 – indicator of slightly acidic to slightly basic conditions, never occurring in very acidic conditions
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  • Nutrient indicator value: 4 – transition between values 3 and 5
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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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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

  • Elevational belt in the Czech Republic: colline belt
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  • Occurrence frequency in the basic grid mapping cells and quadrants of the basic grid mapping cells: 3, 3
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Threats and protection

  • Red List 2017 (national categories): A1 – extinct taxon
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  • Red List 2017 (IUCN categories): RE – regionally extinct
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  • Legal protection: not protected by law
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