According to the binomial nomenclature, the lowest four taxonomic levels (family, genus, species, subspecies) should be printed in italics. This function finds taxonomic names within strings and makes them italic.
The taxonomic names can be italicised using markdown (the default) by adding \code{*} before and after the taxonomic names, or \verb{<i>} and \verb{</i>} when using html. When using 'ansi', ANSI colours will be added using \verb{\\033[3m} before and \verb{\\033[23m} after the taxonomic names. If multiple ANSI colours are not available, no conversion will occur.