Chicory

Cichorium intybus

Cichorium: From the Greek kichore, which usually carries a common name of chicory or endive
intybus: Latin name for endive, chicory, derived from Egyptian tybi, (January), referring to the month the plant was customarily eaten
(Dave’s Garden Botanary)

The Wild Chicory is peculiarly a plant of the dry roadside, especially in chalk districts, where it is a striking feature.

It is cultivate on a large scale on the continent for its root, when roasted and ground, forms the substance that is used in combination with coffee

Flowering from July to October.

The Observer’s Book of Wild Flowers, compiled by W. J. Stokoe (1957)