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Helleborus net necrosis virus (HeNNV), also known as Hellebore black death, is an RNA virus that can cause serious disease in Hellebore plants by stunting or deforming the plant as it grows. The disease marks the leaves of the hellebores with black streaks, often following the veins of the leaf, and creating ring patterns.
Helleborus niger has proved easier to cross with other hellebore species. Crosses between it and H. argutifolius (formerly known as H. corsicus) are called H. × nigercors. First made in 1931, the hybrid is a large, tough plant with white flowers flushed with green; they are said to be the best of all hellebores for cut flowers. [3]
Helleborus viridis, commonly called green hellebore, [1] [2] is a species of flowering plant in the buttercup family Ranunculaceae, native to Central and Western Europe, including southern England. All parts of the plant are poisonous.
Helleborus foetidus, known variously as stinking hellebore / ˈ h ɛ l ɪ b ɔː r /, dungwort, setterwort and bear's foot, is a species of flowering plant in the buttercup family Ranunculaceae, native to the mountainous regions of Central and Southern Europe and Asia Minor. It is found wild in many parts of England, especially on limestone soil.
Helleborus orientalis, the Lenten rose, [1] is a perennial flowering plant and species of hellebore in the buttercup family, Ranunculaceae, native to Greece and Turkey. [ 2 ] Bed of Helleborus orientalis.
Hellebore. This plant actually is a cold-hardy perennial that blooms in the winter months, so it's often known as Lenten rose or Christmas rose. Its papery flowers are stunning against the waxy ...