European field pansy (wild pansy)
Viola arvensis

Description
Annual or hardy-annual, seed-propagated weed. V. arvensis is greatly varying in height, flower color and flower size.

Characteristic Features
Petals 5, creamy white or pale yellow with tinges of blue.
Sepals equal to or slightly shorter than the petals.

Cotyledons
Round-ovate, short-petiolate, with retracted tip.

Stems
Ascending or erect, usually ramified, 10-60 cm (3.93 - 23.62 inch) high.

Leaves
Sparse, notched on the margin, lower leaves ovate-lanceolate, gradually tapering into the petiole, upper leaves oblong-lanceolate, short-petiolate; all with pinnatifid stipules at the base.