| [19973] Ranunculus peltatus subsp. peltatus | Appellations de Taxon | 19973 |
| [19974] Ranunculus penicillatus subsp. pseudofluitans | Appellations de Taxon | 19974 |
| [19975] Ranunculus penicillatus subsp. vertumnus | Appellations de Taxon | 19975 |
| [19976] Ranunculus penicillatus var. penicillatus | Appellations de Taxon | 19976 |
| [19977] Ranunculus polyphyllus | Appellations de Taxon | 19977 |
| [19978] Ranunculus reptans | Appellations de Taxon | 19978 |
| [19979] Ranunculus sphaerosphermus | Appellations de Taxon | 19979 |
| [1998] Urticaceae | Appellations de Taxon | 1998 |
| [19980] Ranunculus trichophyllus subsp. eradicatus | Appellations de Taxon | 19980 |
| [19982] Ranunculus trichophyllus x circinatus | Appellations de Taxon | 19982 |
| [19983] Ranunculus x bachii | Appellations de Taxon | 19983 |
| [19984] Ranunculus x cookii | Appellations de Taxon | 19984 |
| [19985] Ranunculus x kelchoensis | Appellations de Taxon | 19985 |
| [19986] Ranunculus x levenensis | Appellations de Taxon | 19986 |
| [19987] Ranunculus x novae-forestae | Appellations de Taxon | 19987 |
| [19988] Reynoutria japonica | Appellations de Taxon | 19988 |
| [19989] Rhizomnium magnifolium | Appellations de Taxon | 19989 |
| [1999] Urtica | Appellations de Taxon | 1999 |
| [19990] Rhizomnium pseudopunctatum | Appellations de Taxon | 19990 |
| [19991] Rhizomnium punctatum | Appellations de Taxon | 19991 |
| [19992] Rhizomnium | Appellations de Taxon | 19992 |
| [19993] Rhodobryum roseum | Appellations de Taxon | 19993 |
| [19994] Rhodochorton violaceum | Appellations de Taxon | 19994 |
| [19995] Rhynchospora rugosa | Appellations de Taxon | 19995 |
| [19997] Ribes rubrum | Appellations de Taxon | 19997 |
| [19998] Riccia huebeneriana | Appellations de Taxon | 19998 |
| [19999] Riccia rhenana | Appellations de Taxon | 19999 |
| [2] Taeniopterygidae | Appellations de Taxon | 2 |
| [20] Nemouridae | Appellations de Taxon | 20 |
| [200] Hydroptila | Appellations de Taxon | 200 |
| [2000] Urtica dioica | Appellations de Taxon | 2000 |
| [20000] Ricciocarpos natans | Appellations de Taxon | 20000 |
| [20002] Rorippa palustris | Appellations de Taxon | 20002 |
| [20003] Rorippa x anceps | Appellations de Taxon | 20003 |
| [20004] Rorippa x armoracioides | Appellations de Taxon | 20004 |
| [20007] Rotala filiformis | Appellations de Taxon | 20007 |
| [20008] Rotala indica | Appellations de Taxon | 20008 |
| [20009] Rumex aquaticus | Appellations de Taxon | 20009 |
| [20010] Rumex palustris | Appellations de Taxon | 20010 |
| [20011] Ruppia cirrhosa | Appellations de Taxon | 20011 |
| [20012] Ruppia drepanensis | Appellations de Taxon | 20012 |
| [20014] Saccharum spontaneum | Appellations de Taxon | 20014 |
| [20015] Saccogyna viticulosa | Appellations de Taxon | 20015 |
| [20016] Sagina nodosa | Appellations de Taxon | 20016 |
| [20017] Sagittaria latifolia | Appellations de Taxon | 20017 |
| [20018] Sagittaria natans | Appellations de Taxon | 20018 |
| [20019] Sagittaria rigida | Appellations de Taxon | 20019 |
| [2002] Valeriana | Appellations de Taxon | 2002 |
| [20020] Sagittaria subulata | Appellations de Taxon | 20020 |
| [20021] Lumbriculidae immatures | Appellations de Taxon | 20021 |