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  1. Sepal phenolic profile during Helleborus niger flower development

    • Morphological changes and phenolic patterns of developing hellebore sepals and the effects of pistil removal on these parameters were studied by comparing six flower stages of Helleborus niger. Color changes wer… 展开

    Introduction

    Christmas rose (Helleborus niger) is a shade-loving species of the Helleborus genus … 展开

    ScienceDirect
    Materials and methods

    Plant material
    Helleborus niger L. plants selected for the analysis were located in a deciduous forest near Ljubljana, Slovenia (altitude 650 m; lat. 45.6° N, long… 展开

    ScienceDirect
    Results and discussion

    Morphological parameters
    Up to now, the faint red blush of hellebore buds and purple–red shades of senescent sepals were only visually ascertained although severa… 展开

    ScienceDirect
    Conclusion

    The overall morphological and metabolic patterns of developing hellebore sepals and the effects of fructification on these parameters were studied by comparing six flower developm… 展开

    ScienceDirect
     
  1. Hellebore - 6BC Botanical Garden

    Description: The flowers have five petal-like sepals surrounding a ring of small, cup-like nectaries which are actually "petals" modified to hold nectar. The sepals do not fall as petals would, but remain on the plant, sometimes for many …

  2. Hellebore - Floral Design Institute

  3. Sepal phenolic profile during Helleborus niger flower development

  4. Ask an Expert: Hellebores! - Hoyt Arboretum

    2021年3月16日 · Stinking hellebore (Helleborus foetidus): Leaves and stems evergreen (lasting 1+ year), stems with leaves; Leaves deeply palmately-lobed, edges with short teeth; Flowering stalks with many flowers; Flowers small, 1-3 …

  5. Captivating Hellebores - Garden.org

  6. Helleborus - Wikibooks, open books for an open world

  7. Hellebore: History, Characteristics, Varieties, Problems …

    2024年5月27日 · These flowers, which bloom in late winter or early spring, are not made up of petals but of sepals. Interestingly, after the plant has bloomed, the sepals remain alive as long as the plant lives. This characteristic gives …

  8. A close-up view of a hellebore. - Microscopy-UK

  9. The Different Varieties of Hellebore - Gardener's Path

    2020年3月5日 · Perennial hellebores add color to the late-winter garden. Learn about the array of varieties available and the unique features of each, on Gardener’s Path.