Matching messy species lists that include names that are not binomial names

[sojwolf]

I am trying to join two large and not perfectly curated data frames. LCVPlants seems to be the perfect solution, however, I get the following warning:

x <- lcvp_join(df1, df2, c("Species", "species"), type = "inner")

Warning: The 'x' sign indicating hybrids have been removed in the following names before search: 'Abelia x', 'Acaena x', 'Aconitum x', 'Amaranthus x', 'Anguloa x', 'Arbutus x', 'Aronia x', 'Asplenium x', 'Aster x', 'Betula x', 'Bromus x', 'Calceolaria x', 'Canna x', 'Carex x', 'Cerasus x', 'Circaea x', 'Citrus x', 'Clinopodium x', 'Colutea x', 'Coptidium x', 'Crataegus x', 'Cupressus x', 'Dactylorhiza x', 'Diphasiastrum x', 'Drosera x', 'Dryopteris x', 'Elymus x', 'Equisetum x', 'Erodium x', 'Erysimum x', 'Eucalyptus x', 'Fagus x', 'Forsythia x', 'Fragaria x', 'Galium x', 'Glandularia x', 'Glyceria x', 'Hebe x', 'Hieracium x', 'Hypericum x', 'Iris x', 'Laburnum x', 'Larix x', 'Lolium x', 'Lonicera x', 'Magnolia x', 'Malus x', 'Medicago x', 'Mentha x', 'Narcissus x', 'Nasturtium x', 'Nepeta x', 'Nothofagus x', 'Nymphaea x', 'Ocimum x', 'Opuntia x', 'Picea x', 'Pistacia x', 'Platanus x', 'Polygonatum x', 'Polypodium x', 'Populus x', 'Potamogeton x', 'Potentilla x', 'Pyrus x', 'Quercus x', 'Reynou [... truncated]
Error: splist should include only binomial names, please check the following names: 'Abelia x', 'Acaena x', 'Aconitum x', 'Amaranthus x', 'Anguloa x', 'Arbutus x', 'Aronia x', 'Asplenium x', 'Aster x', 'Betula x', 'Bromus x', 'Calceolaria x', 'Canna x', 'Carex x', 'Cerasus x', 'Circaea x', 'Citrus x', 'Clinopodium x', 'Colutea x', 'Coptidium x', 'Crataegus x', 'Cratoxylon', 'Cupressus x', 'Dactylorhiza x', 'Diphasiastrum x', 'Drosera x', 'Dryopteris x', 'Elymus x', 'Equisetum x', 'Erodium x', 'Erysimum x', 'Erythroxylum cf.', 'Eucalyptus x', 'Eugenia cf.', 'Fagus x', 'Ficus cf.', 'Forsythia x', 'Fragaria x', 'Galium x', 'Glandularia x', 'Glyceria x', 'Guatteria cf.', 'Hebe x', 'Hieracium x', 'Hypericum x', 'Iris x', 'Laburnum x', 'Larix x', 'Lolium x', 'Lonicera x', 'Magnolia x', 'Malus x', 'Medicago x', 'Mentha x', 'Milletia cf.', 'Narcissus x', 'Nasturtium x', 'Neea cf.', 'Nepeta x', 'Nothofagus x', 'Nymphaea x', 'Ocimum x', 'Opuntia x', 'Philodendron cf.', 'Picea x', 'Pistacia x', '

Is there a way to simply skip names that don't fit the requirements? The species lists are too long to manually go through everything. That would be very helpful. Thank you!