Abstract
The poorly known Indian species Fissidens arunii is neotypified, described, figured and compared with other limbate, unipapillose species. Fissidens elimbatus is subsumed under F. crispulus, F. plumula under F. firmus and F. touwii under F. sedgwickii. Taxonomic changes: neotypification Fissidens arunii, F. crispulus Brid. (= F. elimbatus Broth. and = F. walkeri var. elimbatus (Broth.) Dixon), F. firmus (= F. plumula Mitt.). and F. sedgwickii Broth. & Dixon (= Fissidens touwii Tad. Suzuki & Z. Iwats.).