Corn mint

Mentha arvensis



Wild penny royal

Importance

Widespread.

Corn mint - young1. Cotyledons are round.
Corn mint 22. First true leaves have short stalks. All leaves are produced in pairs and are pointed, often hairy and tinged with purple.
Corn mint 33. A bushy perennial with small purple flowers produced in whorls or rings up the stems. Smells like lemon when leaves are crushed.