helleborus niger造句

• "Helleborus niger " has proved easier to cross with other hellebore species.
• Hellebores _ a species that also includes the earlier-blooming helleborus niger, or Christmas rose _ resemble wild roses.
• "Helleborus niger " is commonly called the Christmas rose, due to an old legend that it sprouted in the snow from the tears of a young girl who had no gift to give the Christ child in Bethlehem.
• His thesis very thoroughly examined the historical literature and sought to differentiate between the ancient use of " Helleborus niger ", or black hellebore, and the medicinal uses of the " white hellebore ", botanically " Veratrum album ", both of which are poisonous plants.
• Although " Helleborus niger " ( black hellebore ) contains protoanemonin, or ranunculin, which has an acrid taste and can cause burning of the eyes, mouth, and throat, oral ulceration, gastroenteritis, and hematemesis, research in the 1970s showed that the roots of " H . niger " do not contain the cardiotoxic compounds helleborin, hellebrin, and helleborein that are responsible for the lethal reputation of " black hellebore ".