Locally widespread within a well-defined area, mainly in the Chilterns. This important population is one of only two nationally, the other being in Hampshire. Occurs in rough, open, well-drained grassy habitats on calcareous soils, including unimproved chalk downland.

	Retained Specimen / Photograph will be Required.

Recorded in 17 (22%) of 78 10k Squares.
First Recorded in 1856.
Last Recorded in 2022.
(Data up to end 2022)