Riccia mamillata Trab. ex Steph.

RECORDS. — Stephani (1889b): sine loco. Trabut (1941), Jelenc (1955a): El-Adjiba (Alger).

COMMENT

This species was not included in the monograph of the genus Riccia L. in the Mediterranean area by Jovet-Ast (1986), but was listed by Söderström et al. (2002, 2016), who mentioned knowledge problems. It was included in Hodgetts et al. (2020) as a species occurring in territories adjacent to Europe. According to Casares-Gil (1919) it is similar to Riccia macrocarpa Levier. Its identity remains doubtful.