Tall thistle in alkaline marais in Picardy

Tall thistle in alkaline marais in Picardy

Observation - Tall thistle in alkaline marais in Picardy. Description: Up to 2m tall, leaves up to 30/40 cm long. Flowers pale coloured?

Up to 2m tall, leaves up to 30/40 cm long. Flowers pale coloured?