I ve been looking at WP NC flora which seems to be quite definite about this situation It says that the product should have an article under that name the species under its scientific name and of course the genus gets its own article I have therefore divided the information as follows Humulus formerly Hop plant Information covering all species Cultivation history etc information all relevant only to one species moved to Hops Humulus lupus Botanical information Hops History uses cultivation etc Incorporate information from Hop plant Now some duplication I hope this all looks OK