On sandy soil and on humus in heathlands and over natural, siliceous or sandstone outcrops, usually in open places and frequent in disused quarries.

Belgium: Camp.: R, Mosan: R, Ard.: AR, Lorr.: RRR.

Luxembourg: Ard.: AR, Lorr.: AR.

France: Ard.: RR.

Lit.: La69: 136, Mü1: 146, Smets (1997).