Studies on Plagiochila subgenus Metaplagiochila (Plagiochilaceae, Hepaticae)

Abstract

Plagiochila bantamensis (Reinw., Blume & Nees) Mont., P. blepharophora (Nees) Lindenb., P. chauvinianaMont., P. clavatosaccata Steph., P. integrilobula Schiffn., P. johannis-winkleri Herzog, P. kurziiSteph., P. pacificaMitt., P. sandei Dozy ex Sande Lac., P. stephaniiSchiffn. and P. vitiensis Mitt. are included in the subgenus Metaplagiochila. Plagiochila pacifica Mitt. is redescribed and illustrated. A lectotype is designated for P. tahitensis Steph. The following six species names are synonymised: Plagiochila densifolia Sande Lac. (=P. bantamensis), Plagiochila hebridensis Steph. (=P. vitiensisMitt.), Plagiochila meijeri Inoue (=P. kurziiSteph.), Plagiochila nadeaudiana Steph. ex Dugas (=P. vitiensis Mitt.), P. parkinsonii Steph. (=P. sandei) and P. robinsonii Steph. (=P. sandei). Plagiochila obscura Colenso belonging to sect. Tayloriae Carl of subgenus Plagiochila, is removed from the synonymy of P. pacifica. Plagiochila longistipulaSteph. and P. savezianaSteph. are exluded from the subgenus. A key to the eleven species in the subgenus Metaplagiochila worldwide is provided.