Riccia cavernosa Hoffm.

RECORDS. — Trabut (1941), Jovet-Ast (1986): Sahara, à In-Salah (Massifs sahariens). Very rare.

COMMENT

It was not listed for Algeria by Ros et al. (1999, 2007a), but at least one report was made by Trabut (1941) as Riccia crystallina var. angustior Lindenb. Also, Bischler (2004) informed to it had been reported previously in Algeria. Rare.