Ive been looking at WPNC 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