Knautia arvensis
 Knautia arvensis commonly known as Field Scabious is a species in the genus Knautia.It is a perennial plant that grows between 25 and 100 cm. It prefers grassy places and dry soils avoiding heavy soils and flowers between July and September. The flowered head is flatter than similar species Devils bit scabious and Small Scabious. There are 4 stamens in each flower and 1 notched long stigma.The fruit is nut like cylindrical and hairy 5–6 mm in size.It has a tap root.