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Sixty taxa of mosses, mainly pleurocarps, are reported from the Mascarenes. Two are new to Afr.3 sensu Index Muscorum, i.e., Brachythecium plumosum (Hedwig) Schimper in BSG and Palamocladium sericeum (Jaeger) C.Müller. Nine are new to the Mascarenes, i.e., Brachythecium decurrens Cardot, Callicostella parvocellulata Demaret & P.Varde, Helicodontium lanceolatum (Hampe & C.Müller) Jaeger, Lepidopilum carrougeauanum Thér. & P.Varde, Mittenothamnium microthamnioides (Geh.) Wijk & Marg., Orthostichopsis longinervis (Ren. & Cardot) Broth., Plagiothecium nitens Dixon, Rhynchostegium comorae (C.Müller) Jaeger and Trachypus bicolor var. hispidulus (C.Müller) Cardot. One is new to Mauritius and Réunion, but known from Rodrigues, i.e., Meiothecium madagascariense (Bridel) Broth. Five taxa are new to Mauritius, i.e., Callicostella salaziae (Besch.) Broth., Lopidium struthiopteris (Bridel) Fleischer, Macrohymenium acidodon (Mont.) Dozy & Molk., Orthostichella pentasticha (Bridel) Buck and Vesicularia lepervanchei (Besch.) Broth.
37 species of mosses are reported from the Mascarenes. Of these 19 belong to the genus Campylopus and 8 to Leucoloma. Three are new to the Mascarenes i.e. Campylopus leucochlorus (C.Müll.) Par., C. paludicola Broth. and C. subperichaetialis Biz. & Kilb., two are new to Mauritius i.e. Bryum truncorum (Brid.) Brid. and Leucoloma cinclidotioides Besch. and four are new to Réunion i.e. Campylopus incacorralis Herz. C. praetermissus J.-P. Frahm, C. trachyblepharon (C. Müll.) Mitt. ssp. comatus (Ren. & Card.) J.- P. Frahm and Leucoloma rutenbergii (Geh.) Wright var. elatum Ren. The variety is new to the Mascarenes.
Thirty-seven species of mosses are reported from the Mascarenes and three are republished under new names. Didymodon michiganensis (Steere) K. Saito is new to Africa. Campylopus bartramiaceus (C. Muell.) Thér., Pogonatum proliferum (Griff.) Mitt. and Zygodon intermedius B.S.G. are new to the Mascarenes. Calymperes palisotii ssp. palisotii Schwaegr. is new to Mauritius.
16 taxa of mosses and 4 taxa of hepatics have been identified from a recent collection of Seychelles bryophytes. Isopterygium subleptoblastum C.Müller is new to the Seychelles. Ectropothecium squarrifolium (Broth.) Nishimura is new to Africa 3 sensu Index Muscorum, but the identification is somewhat uncertain.
Fifteen taxa of mosses are reported from the island of Rodrigues. The second African report of Luisierella barbula (Schwaegr.) Steere bridges the Asian and New World disjunctions of this taxon. Three other species are reported new to the Mascarenes, i.e., Calymperes tenerum C.Müller var. tenerum, Fissidens ramulosus Mitten and Weissia edentula Mitten. Three are new to Rodrigues, i.e., Bryum truncorum Bridel, Fissidens sciophyllus Mitten and Vesicularia ayresii (Schimper ex Besch.) Broth.
A list of Pottiaceae specimens is presented. Trichostomum bombayense C.Müll. is transferred to the genus Pseudosymblepharis Broth., and a new combination is made: Pseudosymblepharis bombayensis (C.Müll.) P. Sollman. Five new synonyms are proposed. Gametophyte characters, separating non-fruiting material of Pseudosymblepharis bombayensis from Trichostomum tenuirostre (Hook. & Tayl.) Lindb., are listed.