Riccia frostii Austin

Riccia convexa Steph.

Riccia convexa Steph. ex Har. nom. nud.

Nomenclature follows Jovet-Ast (1957).

RECORDS. — Jovet-Ast (1986): Hoggar, Tassili des Ajjers. Very rare.

COMMENT

The locality Dhayet El-Tofla (Dayet el Tefla,), in the Sahara occidental, reported by Hariot (1913) and Jelenc (1955a), and confirmed by Jovet-Ast (1957) as Riccia convexa is situated in Mauritania (State Adrar, Region Aoujeft, County N’Teirguent, 19.71682N 12.86083W) and not to Algeria as was stated by Ros et al. (2007a).