Picris hieracioides - Hawkweed Oxtongue
This is infrequent in vc77, but is common in the south-east of England.
This plant is tall, robust and much branched and favours rough grassland and waste ground.
There are several subspecies which can be identified by the type of hair on the capitulum (bracts behind the flower) and the relative length of the flower stalks. The ones found in Lanarkshire so far, are the subspecies hieracoides.
A similar plant, also from Southern England is also becoming more common, Bristly Oxtongue, Helminthotheca echioides.