violaceous

 
Pronunciation: /ˌvʌɪəˈleɪʃəs/

adjective

  • 1chiefly technical of a violet colour: the fruiting body is pink or violaceous
  • 2 Botany relating to or denoting plants of the violet family (Violaceae).

Origin:

mid 17th century: from Latin violaceus (from viola 'violet') + -ous