This paper gives an account of the monocotyledonous plants growing in Manipur. In all 426 species (+ 8 varieties) representing 219 genera and distributed over 33 families have been dealt with. Hutchinson's system has been followed in arranging the families. Efforts have been made to find out the correct names m accordance with the latest International code of Botanical nomenclature. Only relevant and commonly used synonyms have been cited wherever required, immediately below the valid names. Citation of the original publication of the valid name has been made excepting several cases where the original paper concerned was not available to the author, for scrutiny.
A short description indicating the characteristic of the species has been given. A short ecological note has been added. In citation of the herbarium specimens, preference has been given to the author's personal collection. Others collections have not been cited completely. Species recorded by earlier workers from Manipur, but not examined by the author have also been cited in this paper.