Chinese Mallow - Malva verticillata
This plant can vary in height up to 1 metre or more, but is often shorter. The pink or mauve flowers grow in whorls or clusters in the nodes of branches. Leaves can be variable, some sharp pointed, some more rounded. The fruits are only faintly ridged.
Other Mallows, especially Dwarf Mallow

Unless identified by a recognised expert, a photo is required and the specimen may be requested to confirm identification.
Occurs casually on rough or waste grounds but does not often persist.
Usually flowering June to August but recorded flowering in March in Britain.
Short-lived perennial or annual.
Widespread but infrequent records of this plant in the wild in Britain.
Rare, or rarely recorded in Leicestershire and Rutland.
Leicestershire & Rutland Map
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MAP KEY:
Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015