(a) Some other modem aid in taxonomic studies are keys manuals, monograph etc.
(b) These also record descriptions of species. These all are helpful in correcting identification of the floral account on habit, distribution of plants give an index to plants known in an area.
(c) The manuals contain compiled informations about area covered, keys, description of families, genus and species.
(d) Monograph give comprehensive account of complete compilation of available information of family or genus.
(e) The periodicals and dictionaries are published to brought out informations about new additions.