Malva sylvestris is a species of the mallow genus Malva in the family of Malvaceae and is considered to be the type species for the genus. Known as common mallow to English-speaking Europeans, it acquired the common names of cheeses, high mallow and tall mallow (mauve des bois by the French) as it migrated from its native home in Western Europe, North Africa and Asia through the English-speaking world.
M. sylvestris is a vigorous plant with showy flowers of bright mauve-purple, with dark veins, standing 3–4 feet (0.91–1.22 m) high and growing freely in meadows, hedgerows and in fallow fields.
It is one of several species of different genera sometimes referred to as Creeping Charlie, a term more commonly applied to Glechoma hederacea (ground ivy).
Common mallow is a herbaceous perennial with an erect or decumbent branched stem up to 1 m (sometimes 1.5 m) long. The minutely-ridged stems are covered with fine soft hairs, sometimes with a slightly bulbous base. The leaves are alternate, with a petiole up to 20 cm long, simple but palmate, up to 7 cm long by 10 cm wide, with stellate hairs (i.e. several strands radiating from a common center) and prominent veins on the underside.
The flowers are reddish-purple with dark stripes and occur in axillary clusters of 2 to 4 along the main stem with the flowers at the base opening first. There are 5 petals, each being up to 20 mm long, and 5 sepals, 3-6 mm long, which are fused in the lower half, and have broadly triangular lobes. There is also an epicalyx (or false calyx) with oblong segments, two-thirds as long as calyx lobes (2–3 mm long x 1.5 mm wide).
