Syn.: C. symphycarpa auct.

On sandy or mineral soil, or overgrowing mosses in dry and exposed, open, calcareous habitats; a species typical of Xerobromion communities, also found in similar artificial habitats, like old railway ballast and on industrial soil contaminated with heavy metals (Pb and Zn).

Belgium: Mosan: AR.

Luxembourg: Lorr.: R.

France: Mosan: RR, Lorr.: RR.

Lit.: DG: 28, Ertz: 19, La69: 142, NL84: 13, NL97: 47, Diederich (1985b: 32).