Knautia is a genus in the family Caprifoliaceae. The common names of these flowers are a variant of "widow flower." Others are given the name "Scabious," although this word belongs to a related genus (Scabiosa). Species include: \n* Knautia arvensis - Meadow Widow Flower, Blue Buttons, Field Scabious \n* Knautia carinthiaca \n* Knautia drymeia - Hungarian Widow Flower \n* Knautia kitaiebellii \n* Knautia longifolia - Long Leaf Widow Flower \n* Knautia macedonica \n* Knautia maxima - Forest Widow Flower \n* Knautia norica \n* Knautia persicina