Stachys byzantina

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Habitus and growth type

  • Height [m]: 0.2–0.8
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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): opposite, rosulate
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  • Leaf shape: simple – entire
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  • Stipules: absent
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  • Petiole: both present and absent
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Flower

  • Flowering period [month]: July–August
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  • Flower colour: pink, pink-violet
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  • Flower symmetry: zygomorphic
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  • Perianth type: calyx and corolla
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  • Perianth fusion: fused
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  • Shape of the sympetalous corolla or syntepalous perianth: bilabiate
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  • Calyx fusion: synsepalous
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  • Inflorescence type: pseudospica e verticillastris composita
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Fruit, seed and dispersal

  • Fruit type: dry fruit – cluster of four one-seeded nutlets
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  • Fruit colour: brown
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  • Dispersal unit (diaspore): fruit, infrutescence or its part
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  • Dispersal strategy: Allium (mainly autochory)
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  • Myrmecochory: probably myrmecochorous nv
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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): 30
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  • Ploidy level (x): 4
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  • 2C genome size [Mbp]: 1283.06
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  • 1Cx monoploid genome size [Mbp]: 320.76
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  • Genomic GC content: 37.6 %
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Taxon origin

  • Origin in the Czech Republic: neophyte
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  • Invasion status: naturalized
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  • Geographic origin: Mediterranean
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  • Period of introduction: Recent Past (1950–2000)
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  • Introduction pathway: intentional – ornamental
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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

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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