Knautia arvensis (L.) Coult., 1823
Common names: Field Scabious, Gypsy´s-Rose [En], Knautie des champs, Scabieuse des champs [Fr], Beemdkroon [Nl], Acker-Witwenblume [De], Ambretta [It], Escabiosa, Lengua de vaca, Viuda silvestre [Es].
Durbuy, LUXEMBOURG ● Belgium (with Epsyrphus balteatus ♀)
Etymology: Knautia a été nommée en hommage à Christian Knaut, botaniste allemand, qui a vécu de 1656 à 1716.
Description: It is a perennial plant that grows between 25 and 100 cm. 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.
It has a tap root. The stem has long stiff hairs angled downwards. There are no stipules.
The leaves form a basal rosette, are paired on the stem, the lowest typically 300 mm long, spear shaped, whereas the upper are smaller.
The fruit is nut like, cylindrical and hairy, 5–6 mm in size.
Biology: It flowers between July and September.
It is the foodplant of the Narrow-bordered Bee Hawk-moth Hemaris tityus and the Longorn moth Nemophora metallica. It is also occasionally used by the Marsh Fritillary Euphydryas aurinia as a foodplant instead of its usual foodplant of Devils Bit Scabious (Succisa pratensis).
Habitat: Meadows, pastures, hedgebanks and grassy hills, usually on dry soils and especially on limestone.
Distribution: Europe, Western Asia, Northern Africa. Introduced in North America.
Wikipedia, Knautia arvensis
Plants For A Future