"An orchid that does not have a commercial value as a cut flower." (E.W. Charles) "many hybrids would qualify". F69-5
"Generally small-flowered (although not always so) generally found in botany (though not necessarily found there) generally a species (although not necessarily a species) and not extensively found in the florists' shops." (Thomas Brown McClelland) A59-723
"Of interest usually only to botanists who are not concerned with size, color, fragrance or duration of bloom. F67-147
A botanical is almost the same as a species, A59-723