Submitted by György Chityil ... on Fri, 01/19/2018 - 20:48 Hierarchy: NounDescription: {{plants}} A particular kind of poisonous and medicinal plant of the species, ''Veratrum nigrum''.Ngram: black helleboreNgram Text: black helleboreSource: WiktionaryIssue: 0Wiktionary tag: plantsNgram Count: 2