Ceratocephala orthoceras

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Habitus and growth type

  • Height [m]: 0.02–0.1
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  • Growth form: annual herb
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  • Life form: therophyte
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  • Life strategy: R – ruderal
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Leaf

  • Leaf presence and metamorphosis: leaves present, not modified
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  • Leaf arrangement (phyllotaxis): rosulate
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  • Leaf shape: simple – pinnately divided
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  • Stipules: absent
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  • Petiole: present
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Flower

  • Flowering period [month]: March–May
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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: flores solitarii
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  • Dicliny: synoecious
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  • Generative reproduction type: autogamy
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  • Pollination syndrome: insect-pollination, selfing
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Fruit, seed and dispersal

  • Fruit type: dry fruit – head of achenes
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  • Reproduction type: only by seed/spores
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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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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: native
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Ecological indicator values

  • Ellenberg-type indicator values

  • Light indicator value: 9 – full light plant, occurring only in fully irradiated places, not at less than 50% of diffuse radiation incident in an open area
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  • Temperature indicator value: 9 – extreme heat indicator, restricted to warmest sites in southern Central Europe
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  • Moisture indicator value: 2 – transition between values 1 and 3
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  • Reaction indicator value: 8 – transition between values 7 and 9, occurring mostly in calcium-rich 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

  • Floristic zone: submeridional, meridional
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  • Floristic region: Europe, Western Asia
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  • Elevational belt in the Czech Republic: lowlands, colline belt
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  • Occurrence frequency in the basic grid mapping cells and quadrants of the basic grid mapping cells: 1, 1
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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: critically threatened taxon
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